./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:25:18,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:25:18,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:25:18,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:25:18,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:25:18,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:25:18,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:25:18,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:25:18,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:25:18,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:25:18,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:25:18,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:25:18,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:25:18,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:25:18,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:25:18,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:25:18,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:25:18,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:25:18,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:25:18,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:25:18,835 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:25:18,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:25:18,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:25:18,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:25:18,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:25:18,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:25:18,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:25:18,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:25:18,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:25:18,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:25:18,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:25:18,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:25:18,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:25:18,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:25:18,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:25:18,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:25:18,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:25:18,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:25:18,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:25:18,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:25:18,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:25:18,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:25:18,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:25:18,896 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:25:18,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:25:18,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:25:18,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:25:18,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:25:18,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:25:18,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:25:18,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:25:18,903 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:25:18,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:25:18,904 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:25:18,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:25:18,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:25:18,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:25:18,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:25:18,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:25:18,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:25:18,905 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:25:18,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:25:18,906 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:25:18,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:25:18,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:25:18,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:25:18,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:25:18,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:18,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:25:18,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:25:18,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:25:18,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:25:18,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:25:18,908 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:25:18,908 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:25:18,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:25:18,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c [2022-07-12 10:25:19,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:25:19,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:25:19,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:25:19,176 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:25:19,176 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:25:19,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2022-07-12 10:25:19,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e3a468d/8835e632b4914e599ce7d84d558ca1f5/FLAGd722a80a2 [2022-07-12 10:25:19,659 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:25:19,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2022-07-12 10:25:19,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e3a468d/8835e632b4914e599ce7d84d558ca1f5/FLAGd722a80a2 [2022-07-12 10:25:19,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e3a468d/8835e632b4914e599ce7d84d558ca1f5 [2022-07-12 10:25:19,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:25:19,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:25:19,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:19,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:25:19,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:25:19,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63123dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19, skipping insertion in model container [2022-07-12 10:25:19,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:25:19,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:25:19,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2022-07-12 10:25:19,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:19,890 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:25:19,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2022-07-12 10:25:19,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:19,922 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:25:19,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19 WrapperNode [2022-07-12 10:25:19,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:19,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:19,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:25:19,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:25:19,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,953 INFO L137 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-07-12 10:25:19,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:19,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:25:19,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:25:19,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:25:19,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:25:19,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:25:19,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:25:19,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:25:19,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19" (1/1) ... [2022-07-12 10:25:19,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:19,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:25:20,011 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) [2022-07-12 10:25:20,012 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 [2022-07-12 10:25:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:25:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:25:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:25:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:25:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:25:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:25:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:25:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:25:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:25:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:25:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:25:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:25:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:25:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:25:20,044 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:25:20,105 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:25:20,106 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:25:20,304 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:25:20,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:25:20,312 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:25:20,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:20 BoogieIcfgContainer [2022-07-12 10:25:20,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:25:20,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:25:20,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:25:20,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:25:20,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:25:19" (1/3) ... [2022-07-12 10:25:20,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d5274c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:20, skipping insertion in model container [2022-07-12 10:25:20,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:19" (2/3) ... [2022-07-12 10:25:20,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d5274c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:20, skipping insertion in model container [2022-07-12 10:25:20,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:20" (3/3) ... [2022-07-12 10:25:20,323 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2022-07-12 10:25:20,336 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:25:20,343 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:25:20,344 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:25:20,344 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:25:20,402 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:25:20,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 124 transitions, 272 flow [2022-07-12 10:25:20,518 INFO L129 PetriNetUnfolder]: 8/121 cut-off events. [2022-07-12 10:25:20,519 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:25:20,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 8/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-07-12 10:25:20,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 124 transitions, 272 flow [2022-07-12 10:25:20,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 110 transitions, 238 flow [2022-07-12 10:25:20,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:25:20,545 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=true, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5d4d2b70, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@793d10c [2022-07-12 10:25:20,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:25:20,573 INFO L129 PetriNetUnfolder]: 8/109 cut-off events. [2022-07-12 10:25:20,573 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:25:20,574 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:20,574 INFO L200 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] [2022-07-12 10:25:20,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:20,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:20,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2142705332, now seen corresponding path program 1 times [2022-07-12 10:25:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:20,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362439340] [2022-07-12 10:25:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:20,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:21,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:21,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362439340] [2022-07-12 10:25:21,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362439340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:21,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:21,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:25:21,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571307373] [2022-07-12 10:25:21,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:21,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:25:21,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:21,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:25:21,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:25:21,077 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 124 [2022-07-12 10:25:21,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:21,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 124 [2022-07-12 10:25:21,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:21,417 INFO L129 PetriNetUnfolder]: 133/459 cut-off events. [2022-07-12 10:25:21,417 INFO L130 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-07-12 10:25:21,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 459 events. 133/459 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2277 event pairs, 30 based on Foata normal form. 6/444 useless extension candidates. Maximal degree in co-relation 605. Up to 68 conditions per place. [2022-07-12 10:25:21,428 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 49 selfloop transitions, 17 changer transitions 16/164 dead transitions. [2022-07-12 10:25:21,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 164 transitions, 549 flow [2022-07-12 10:25:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:25:21,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:25:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1324 transitions. [2022-07-12 10:25:21,453 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8213399503722084 [2022-07-12 10:25:21,454 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1324 transitions. [2022-07-12 10:25:21,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1324 transitions. [2022-07-12 10:25:21,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:21,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1324 transitions. [2022-07-12 10:25:21,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 101.84615384615384) internal successors, (1324), 13 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,481 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,482 INFO L186 Difference]: Start difference. First operand has 112 places, 110 transitions, 238 flow. Second operand 13 states and 1324 transitions. [2022-07-12 10:25:21,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 164 transitions, 549 flow [2022-07-12 10:25:21,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 164 transitions, 511 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:25:21,492 INFO L242 Difference]: Finished difference. Result has 125 places, 120 transitions, 331 flow [2022-07-12 10:25:21,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=331, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2022-07-12 10:25:21,500 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 13 predicate places. [2022-07-12 10:25:21,500 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 331 flow [2022-07-12 10:25:21,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,501 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:21,501 INFO L200 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] [2022-07-12 10:25:21,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:25:21,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:21,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash -141208881, now seen corresponding path program 1 times [2022-07-12 10:25:21,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:21,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292993891] [2022-07-12 10:25:21,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:21,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:21,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:21,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292993891] [2022-07-12 10:25:21,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292993891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:21,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:21,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:21,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642456989] [2022-07-12 10:25:21,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:21,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:21,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:21,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:21,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:21,688 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:21,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:21,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:21,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:21,916 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 9#L54-8true, 18#L70-4true, 63#thread1ENTRYtrue, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-12 10:25:21,917 INFO L384 tUnfolder$Statistics]: this new event has 51 ancestors and is not cut-off event [2022-07-12 10:25:21,917 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-07-12 10:25:21,917 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-07-12 10:25:21,917 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-07-12 10:25:21,937 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 9#L54-8true, 18#L70-4true, 87#L42-2true, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-12 10:25:21,938 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2022-07-12 10:25:21,938 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-12 10:25:21,938 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-12 10:25:21,938 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-12 10:25:21,941 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 9#L54-8true, 18#L70-4true, 79#L42true, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-12 10:25:21,941 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2022-07-12 10:25:21,941 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-12 10:25:21,941 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-12 10:25:21,941 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-12 10:25:21,948 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 9#L54-8true, 18#L70-4true, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), Black: 132#(= ~result_4~0 0), 129#true, 82#L42-5true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-12 10:25:21,949 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2022-07-12 10:25:21,949 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-12 10:25:21,949 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-12 10:25:21,949 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-12 10:25:21,952 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 9#L54-8true, 18#L70-4true, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), Black: 132#(= ~result_4~0 0), 129#true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 89#L42-3true, Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-12 10:25:21,952 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2022-07-12 10:25:21,952 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-12 10:25:21,952 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-12 10:25:21,952 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-12 10:25:22,017 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 113#L71-2true, 9#L54-8true, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-12 10:25:22,018 INFO L384 tUnfolder$Statistics]: this new event has 62 ancestors and is not cut-off event [2022-07-12 10:25:22,018 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-07-12 10:25:22,018 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-07-12 10:25:22,018 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-07-12 10:25:22,057 INFO L129 PetriNetUnfolder]: 515/2409 cut-off events. [2022-07-12 10:25:22,058 INFO L130 PetriNetUnfolder]: For 507/569 co-relation queries the response was YES. [2022-07-12 10:25:22,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4379 conditions, 2409 events. 515/2409 cut-off events. For 507/569 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 22359 event pairs, 111 based on Foata normal form. 13/2120 useless extension candidates. Maximal degree in co-relation 4341. Up to 317 conditions per place. [2022-07-12 10:25:22,101 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 55 selfloop transitions, 22 changer transitions 6/179 dead transitions. [2022-07-12 10:25:22,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 179 transitions, 632 flow [2022-07-12 10:25:22,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:25:22,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:25:22,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2022-07-12 10:25:22,104 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.896505376344086 [2022-07-12 10:25:22,104 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2022-07-12 10:25:22,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2022-07-12 10:25:22,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:22,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2022-07-12 10:25:22,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,109 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,110 INFO L186 Difference]: Start difference. First operand has 125 places, 120 transitions, 331 flow. Second operand 6 states and 667 transitions. [2022-07-12 10:25:22,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 179 transitions, 632 flow [2022-07-12 10:25:22,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 179 transitions, 628 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:22,133 INFO L242 Difference]: Finished difference. Result has 126 places, 139 transitions, 487 flow [2022-07-12 10:25:22,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=126, PETRI_TRANSITIONS=139} [2022-07-12 10:25:22,134 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 14 predicate places. [2022-07-12 10:25:22,135 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 139 transitions, 487 flow [2022-07-12 10:25:22,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,135 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:22,136 INFO L200 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] [2022-07-12 10:25:22,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:25:22,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:22,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:22,139 INFO L85 PathProgramCache]: Analyzing trace with hash -290271799, now seen corresponding path program 2 times [2022-07-12 10:25:22,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:22,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691607581] [2022-07-12 10:25:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:22,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:22,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691607581] [2022-07-12 10:25:22,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691607581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:22,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:22,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:22,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90475069] [2022-07-12 10:25:22,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:22,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:22,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:22,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:22,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:22,423 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:22,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 139 transitions, 487 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:22,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:22,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:22,973 INFO L129 PetriNetUnfolder]: 625/3071 cut-off events. [2022-07-12 10:25:22,973 INFO L130 PetriNetUnfolder]: For 1476/1588 co-relation queries the response was YES. [2022-07-12 10:25:22,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6323 conditions, 3071 events. 625/3071 cut-off events. For 1476/1588 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 30314 event pairs, 133 based on Foata normal form. 60/2978 useless extension candidates. Maximal degree in co-relation 5186. Up to 383 conditions per place. [2022-07-12 10:25:23,002 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 88 selfloop transitions, 29 changer transitions 10/219 dead transitions. [2022-07-12 10:25:23,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 219 transitions, 1111 flow [2022-07-12 10:25:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 773 transitions. [2022-07-12 10:25:23,005 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8905529953917051 [2022-07-12 10:25:23,005 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 773 transitions. [2022-07-12 10:25:23,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 773 transitions. [2022-07-12 10:25:23,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:23,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 773 transitions. [2022-07-12 10:25:23,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,010 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,010 INFO L186 Difference]: Start difference. First operand has 126 places, 139 transitions, 487 flow. Second operand 7 states and 773 transitions. [2022-07-12 10:25:23,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 219 transitions, 1111 flow [2022-07-12 10:25:23,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 219 transitions, 1111 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:23,028 INFO L242 Difference]: Finished difference. Result has 138 places, 156 transitions, 755 flow [2022-07-12 10:25:23,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=755, PETRI_PLACES=138, PETRI_TRANSITIONS=156} [2022-07-12 10:25:23,029 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 26 predicate places. [2022-07-12 10:25:23,029 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 156 transitions, 755 flow [2022-07-12 10:25:23,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,030 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:23,030 INFO L200 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] [2022-07-12 10:25:23,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:25:23,030 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:23,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:23,031 INFO L85 PathProgramCache]: Analyzing trace with hash -700344827, now seen corresponding path program 3 times [2022-07-12 10:25:23,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:23,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254023217] [2022-07-12 10:25:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:23,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:23,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:23,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254023217] [2022-07-12 10:25:23,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254023217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:23,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:23,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:23,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800368057] [2022-07-12 10:25:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:23,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:23,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:23,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:23,237 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:23,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 156 transitions, 755 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:23,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:23,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:23,895 INFO L129 PetriNetUnfolder]: 647/3871 cut-off events. [2022-07-12 10:25:23,896 INFO L130 PetriNetUnfolder]: For 3403/3539 co-relation queries the response was YES. [2022-07-12 10:25:23,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8577 conditions, 3871 events. 647/3871 cut-off events. For 3403/3539 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 41196 event pairs, 175 based on Foata normal form. 37/3738 useless extension candidates. Maximal degree in co-relation 7135. Up to 491 conditions per place. [2022-07-12 10:25:23,938 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 88 selfloop transitions, 46 changer transitions 5/231 dead transitions. [2022-07-12 10:25:23,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 231 transitions, 1518 flow [2022-07-12 10:25:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2022-07-12 10:25:23,942 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-12 10:25:23,942 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2022-07-12 10:25:23,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2022-07-12 10:25:23,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:23,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2022-07-12 10:25:23,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,948 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,948 INFO L186 Difference]: Start difference. First operand has 138 places, 156 transitions, 755 flow. Second operand 7 states and 770 transitions. [2022-07-12 10:25:23,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 231 transitions, 1518 flow [2022-07-12 10:25:23,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 231 transitions, 1516 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:23,978 INFO L242 Difference]: Finished difference. Result has 148 places, 178 transitions, 1147 flow [2022-07-12 10:25:23,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1147, PETRI_PLACES=148, PETRI_TRANSITIONS=178} [2022-07-12 10:25:23,979 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 36 predicate places. [2022-07-12 10:25:23,980 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 178 transitions, 1147 flow [2022-07-12 10:25:23,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,981 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:23,981 INFO L200 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] [2022-07-12 10:25:23,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:25:23,982 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:23,982 INFO L85 PathProgramCache]: Analyzing trace with hash -620484305, now seen corresponding path program 4 times [2022-07-12 10:25:23,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:23,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669200376] [2022-07-12 10:25:23,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:24,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:24,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669200376] [2022-07-12 10:25:24,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669200376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:24,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:24,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:24,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710563330] [2022-07-12 10:25:24,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:24,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:24,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:24,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:24,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:24,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 178 transitions, 1147 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:24,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:24,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:24,713 INFO L129 PetriNetUnfolder]: 619/3913 cut-off events. [2022-07-12 10:25:24,714 INFO L130 PetriNetUnfolder]: For 4898/5092 co-relation queries the response was YES. [2022-07-12 10:25:24,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 3913 events. 619/3913 cut-off events. For 4898/5092 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 41982 event pairs, 139 based on Foata normal form. 63/3774 useless extension candidates. Maximal degree in co-relation 6641. Up to 472 conditions per place. [2022-07-12 10:25:24,756 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 118 selfloop transitions, 31 changer transitions 1/242 dead transitions. [2022-07-12 10:25:24,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 242 transitions, 2037 flow [2022-07-12 10:25:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-07-12 10:25:24,759 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-07-12 10:25:24,759 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-07-12 10:25:24,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-07-12 10:25:24,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:24,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-07-12 10:25:24,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,764 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,764 INFO L186 Difference]: Start difference. First operand has 148 places, 178 transitions, 1147 flow. Second operand 5 states and 548 transitions. [2022-07-12 10:25:24,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 242 transitions, 2037 flow [2022-07-12 10:25:24,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 242 transitions, 2037 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:24,787 INFO L242 Difference]: Finished difference. Result has 156 places, 197 transitions, 1531 flow [2022-07-12 10:25:24,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1531, PETRI_PLACES=156, PETRI_TRANSITIONS=197} [2022-07-12 10:25:24,790 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 44 predicate places. [2022-07-12 10:25:24,790 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 197 transitions, 1531 flow [2022-07-12 10:25:24,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,791 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:24,791 INFO L200 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] [2022-07-12 10:25:24,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:25:24,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:24,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:24,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1940734035, now seen corresponding path program 1 times [2022-07-12 10:25:24,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:24,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754466500] [2022-07-12 10:25:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:24,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:24,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754466500] [2022-07-12 10:25:24,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754466500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:24,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:24,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:24,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197422616] [2022-07-12 10:25:24,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:24,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:24,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:24,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:24,913 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:24,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 197 transitions, 1531 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:24,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:24,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:25,586 INFO L129 PetriNetUnfolder]: 660/4194 cut-off events. [2022-07-12 10:25:25,587 INFO L130 PetriNetUnfolder]: For 7652/7831 co-relation queries the response was YES. [2022-07-12 10:25:25,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10136 conditions, 4194 events. 660/4194 cut-off events. For 7652/7831 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 46404 event pairs, 151 based on Foata normal form. 38/4044 useless extension candidates. Maximal degree in co-relation 7778. Up to 494 conditions per place. [2022-07-12 10:25:25,626 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 103 selfloop transitions, 77 changer transitions 2/274 dead transitions. [2022-07-12 10:25:25,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 274 transitions, 2644 flow [2022-07-12 10:25:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-07-12 10:25:25,629 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-07-12 10:25:25,629 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-07-12 10:25:25,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-07-12 10:25:25,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:25,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-07-12 10:25:25,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,634 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,634 INFO L186 Difference]: Start difference. First operand has 156 places, 197 transitions, 1531 flow. Second operand 7 states and 769 transitions. [2022-07-12 10:25:25,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 274 transitions, 2644 flow [2022-07-12 10:25:25,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 274 transitions, 2642 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:25,667 INFO L242 Difference]: Finished difference. Result has 168 places, 230 transitions, 2315 flow [2022-07-12 10:25:25,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2315, PETRI_PLACES=168, PETRI_TRANSITIONS=230} [2022-07-12 10:25:25,669 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 56 predicate places. [2022-07-12 10:25:25,669 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 230 transitions, 2315 flow [2022-07-12 10:25:25,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,669 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:25,670 INFO L200 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] [2022-07-12 10:25:25,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:25:25,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:25,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:25,671 INFO L85 PathProgramCache]: Analyzing trace with hash -741378095, now seen corresponding path program 5 times [2022-07-12 10:25:25,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:25,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462235627] [2022-07-12 10:25:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:25,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:25,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:25,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462235627] [2022-07-12 10:25:25,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462235627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:25,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:25,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:25,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231778817] [2022-07-12 10:25:25,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:25,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:25,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:25,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:25,842 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:25,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 230 transitions, 2315 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:25,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:25,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:26,535 INFO L129 PetriNetUnfolder]: 621/3968 cut-off events. [2022-07-12 10:25:26,535 INFO L130 PetriNetUnfolder]: For 10129/10269 co-relation queries the response was YES. [2022-07-12 10:25:26,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10188 conditions, 3968 events. 621/3968 cut-off events. For 10129/10269 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 42846 event pairs, 153 based on Foata normal form. 46/3842 useless extension candidates. Maximal degree in co-relation 8075. Up to 464 conditions per place. [2022-07-12 10:25:26,585 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 111 selfloop transitions, 80 changer transitions 2/285 dead transitions. [2022-07-12 10:25:26,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 285 transitions, 3167 flow [2022-07-12 10:25:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2022-07-12 10:25:26,588 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2022-07-12 10:25:26,588 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2022-07-12 10:25:26,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2022-07-12 10:25:26,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:26,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2022-07-12 10:25:26,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,593 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,594 INFO L186 Difference]: Start difference. First operand has 168 places, 230 transitions, 2315 flow. Second operand 7 states and 772 transitions. [2022-07-12 10:25:26,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 285 transitions, 3167 flow [2022-07-12 10:25:26,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 285 transitions, 3137 flow, removed 15 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:26,726 INFO L242 Difference]: Finished difference. Result has 178 places, 236 transitions, 2676 flow [2022-07-12 10:25:26,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2676, PETRI_PLACES=178, PETRI_TRANSITIONS=236} [2022-07-12 10:25:26,727 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 66 predicate places. [2022-07-12 10:25:26,728 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 236 transitions, 2676 flow [2022-07-12 10:25:26,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,728 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:26,728 INFO L200 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] [2022-07-12 10:25:26,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:25:26,729 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:26,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1329828005, now seen corresponding path program 1 times [2022-07-12 10:25:26,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:26,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124169967] [2022-07-12 10:25:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:26,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:26,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:26,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124169967] [2022-07-12 10:25:26,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124169967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:26,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:26,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:26,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415559192] [2022-07-12 10:25:26,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:26,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:26,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:26,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:26,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:26,847 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:26,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 236 transitions, 2676 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:26,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:26,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:27,679 INFO L129 PetriNetUnfolder]: 662/4665 cut-off events. [2022-07-12 10:25:27,679 INFO L130 PetriNetUnfolder]: For 14153/14295 co-relation queries the response was YES. [2022-07-12 10:25:27,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11978 conditions, 4665 events. 662/4665 cut-off events. For 14153/14295 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 53306 event pairs, 165 based on Foata normal form. 65/4536 useless extension candidates. Maximal degree in co-relation 9689. Up to 506 conditions per place. [2022-07-12 10:25:27,720 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 127 selfloop transitions, 89 changer transitions 1/309 dead transitions. [2022-07-12 10:25:27,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 309 transitions, 3957 flow [2022-07-12 10:25:27,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-07-12 10:25:27,723 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-07-12 10:25:27,723 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-07-12 10:25:27,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-07-12 10:25:27,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:27,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-07-12 10:25:27,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,728 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,728 INFO L186 Difference]: Start difference. First operand has 178 places, 236 transitions, 2676 flow. Second operand 7 states and 769 transitions. [2022-07-12 10:25:27,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 309 transitions, 3957 flow [2022-07-12 10:25:27,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 309 transitions, 3909 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:27,795 INFO L242 Difference]: Finished difference. Result has 188 places, 257 transitions, 3411 flow [2022-07-12 10:25:27,795 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3411, PETRI_PLACES=188, PETRI_TRANSITIONS=257} [2022-07-12 10:25:27,796 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 76 predicate places. [2022-07-12 10:25:27,796 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 257 transitions, 3411 flow [2022-07-12 10:25:27,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,797 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:27,797 INFO L200 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] [2022-07-12 10:25:27,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:25:27,797 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:27,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1005862623, now seen corresponding path program 2 times [2022-07-12 10:25:27,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:27,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962402025] [2022-07-12 10:25:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:27,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:27,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962402025] [2022-07-12 10:25:27,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962402025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:27,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:27,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:27,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946978699] [2022-07-12 10:25:27,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:27,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:27,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:27,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:27,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:27,866 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:27,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 257 transitions, 3411 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:27,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:27,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:28,569 INFO L129 PetriNetUnfolder]: 669/4799 cut-off events. [2022-07-12 10:25:28,570 INFO L130 PetriNetUnfolder]: For 18452/18622 co-relation queries the response was YES. [2022-07-12 10:25:28,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12790 conditions, 4799 events. 669/4799 cut-off events. For 18452/18622 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 55248 event pairs, 179 based on Foata normal form. 67/4649 useless extension candidates. Maximal degree in co-relation 10363. Up to 536 conditions per place. [2022-07-12 10:25:28,618 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 156 selfloop transitions, 46 changer transitions 3/297 dead transitions. [2022-07-12 10:25:28,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 297 transitions, 4169 flow [2022-07-12 10:25:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-07-12 10:25:28,621 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2022-07-12 10:25:28,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-07-12 10:25:28,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-07-12 10:25:28,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:28,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-07-12 10:25:28,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,625 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,626 INFO L186 Difference]: Start difference. First operand has 188 places, 257 transitions, 3411 flow. Second operand 5 states and 555 transitions. [2022-07-12 10:25:28,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 297 transitions, 4169 flow [2022-07-12 10:25:28,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 297 transitions, 4151 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:28,714 INFO L242 Difference]: Finished difference. Result has 196 places, 266 transitions, 3667 flow [2022-07-12 10:25:28,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3667, PETRI_PLACES=196, PETRI_TRANSITIONS=266} [2022-07-12 10:25:28,715 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 84 predicate places. [2022-07-12 10:25:28,715 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 266 transitions, 3667 flow [2022-07-12 10:25:28,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,716 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:28,716 INFO L200 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] [2022-07-12 10:25:28,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:25:28,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:28,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:28,717 INFO L85 PathProgramCache]: Analyzing trace with hash 900386103, now seen corresponding path program 1 times [2022-07-12 10:25:28,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:28,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548385602] [2022-07-12 10:25:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:28,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:28,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:28,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548385602] [2022-07-12 10:25:28,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548385602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:28,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:28,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:28,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328963276] [2022-07-12 10:25:28,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:28,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:28,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:28,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:28,803 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:28,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 266 transitions, 3667 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:28,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:28,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:29,559 INFO L129 PetriNetUnfolder]: 599/4394 cut-off events. [2022-07-12 10:25:29,559 INFO L130 PetriNetUnfolder]: For 18496/18640 co-relation queries the response was YES. [2022-07-12 10:25:29,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12038 conditions, 4394 events. 599/4394 cut-off events. For 18496/18640 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 49660 event pairs, 167 based on Foata normal form. 60/4264 useless extension candidates. Maximal degree in co-relation 9910. Up to 451 conditions per place. [2022-07-12 10:25:29,616 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 162 selfloop transitions, 64 changer transitions 9/327 dead transitions. [2022-07-12 10:25:29,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 327 transitions, 4835 flow [2022-07-12 10:25:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 768 transitions. [2022-07-12 10:25:29,619 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8847926267281107 [2022-07-12 10:25:29,620 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 768 transitions. [2022-07-12 10:25:29,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 768 transitions. [2022-07-12 10:25:29,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:29,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 768 transitions. [2022-07-12 10:25:29,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,624 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,625 INFO L186 Difference]: Start difference. First operand has 196 places, 266 transitions, 3667 flow. Second operand 7 states and 768 transitions. [2022-07-12 10:25:29,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 327 transitions, 4835 flow [2022-07-12 10:25:29,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 327 transitions, 4829 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:29,728 INFO L242 Difference]: Finished difference. Result has 206 places, 276 transitions, 4084 flow [2022-07-12 10:25:29,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3591, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4084, PETRI_PLACES=206, PETRI_TRANSITIONS=276} [2022-07-12 10:25:29,730 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 94 predicate places. [2022-07-12 10:25:29,730 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 276 transitions, 4084 flow [2022-07-12 10:25:29,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,731 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:29,731 INFO L200 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] [2022-07-12 10:25:29,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:25:29,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:29,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash 341613273, now seen corresponding path program 2 times [2022-07-12 10:25:29,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:29,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756647185] [2022-07-12 10:25:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:29,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:29,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:29,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756647185] [2022-07-12 10:25:29,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756647185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:29,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:29,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:29,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465367] [2022-07-12 10:25:29,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:29,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:29,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:29,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:29,839 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:29,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 276 transitions, 4084 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:29,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:29,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:30,581 INFO L129 PetriNetUnfolder]: 599/4452 cut-off events. [2022-07-12 10:25:30,581 INFO L130 PetriNetUnfolder]: For 18519/18668 co-relation queries the response was YES. [2022-07-12 10:25:30,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12375 conditions, 4452 events. 599/4452 cut-off events. For 18519/18668 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 50220 event pairs, 146 based on Foata normal form. 41/4293 useless extension candidates. Maximal degree in co-relation 10030. Up to 487 conditions per place. [2022-07-12 10:25:30,632 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 163 selfloop transitions, 68 changer transitions 3/326 dead transitions. [2022-07-12 10:25:30,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 326 transitions, 5084 flow [2022-07-12 10:25:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 763 transitions. [2022-07-12 10:25:30,635 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2022-07-12 10:25:30,635 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 763 transitions. [2022-07-12 10:25:30,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 763 transitions. [2022-07-12 10:25:30,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:30,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 763 transitions. [2022-07-12 10:25:30,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,640 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,640 INFO L186 Difference]: Start difference. First operand has 206 places, 276 transitions, 4084 flow. Second operand 7 states and 763 transitions. [2022-07-12 10:25:30,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 326 transitions, 5084 flow [2022-07-12 10:25:30,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 326 transitions, 5037 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:30,765 INFO L242 Difference]: Finished difference. Result has 214 places, 282 transitions, 4341 flow [2022-07-12 10:25:30,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4005, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4341, PETRI_PLACES=214, PETRI_TRANSITIONS=282} [2022-07-12 10:25:30,766 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 102 predicate places. [2022-07-12 10:25:30,766 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 282 transitions, 4341 flow [2022-07-12 10:25:30,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,767 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:30,767 INFO L200 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] [2022-07-12 10:25:30,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:25:30,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:30,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1167538681, now seen corresponding path program 3 times [2022-07-12 10:25:30,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:30,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310033815] [2022-07-12 10:25:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:30,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:30,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:30,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310033815] [2022-07-12 10:25:30,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310033815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:30,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:30,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:25:30,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642313716] [2022-07-12 10:25:30,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:30,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:25:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:25:30,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:25:30,873 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:30,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 282 transitions, 4341 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:30,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:30,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:31,628 INFO L129 PetriNetUnfolder]: 648/5090 cut-off events. [2022-07-12 10:25:31,628 INFO L130 PetriNetUnfolder]: For 23693/23825 co-relation queries the response was YES. [2022-07-12 10:25:31,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14137 conditions, 5090 events. 648/5090 cut-off events. For 23693/23825 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 59671 event pairs, 202 based on Foata normal form. 56/4923 useless extension candidates. Maximal degree in co-relation 12344. Up to 501 conditions per place. [2022-07-12 10:25:31,665 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 244 selfloop transitions, 26 changer transitions 5/367 dead transitions. [2022-07-12 10:25:31,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 367 transitions, 6485 flow [2022-07-12 10:25:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:25:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:25:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2022-07-12 10:25:31,667 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8931451612903226 [2022-07-12 10:25:31,667 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2022-07-12 10:25:31,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2022-07-12 10:25:31,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:31,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2022-07-12 10:25:31,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,670 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,670 INFO L186 Difference]: Start difference. First operand has 214 places, 282 transitions, 4341 flow. Second operand 4 states and 443 transitions. [2022-07-12 10:25:31,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 367 transitions, 6485 flow [2022-07-12 10:25:31,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 367 transitions, 6411 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:31,783 INFO L242 Difference]: Finished difference. Result has 219 places, 297 transitions, 4670 flow [2022-07-12 10:25:31,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4237, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4670, PETRI_PLACES=219, PETRI_TRANSITIONS=297} [2022-07-12 10:25:31,784 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 107 predicate places. [2022-07-12 10:25:31,785 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 297 transitions, 4670 flow [2022-07-12 10:25:31,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,785 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:31,785 INFO L200 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] [2022-07-12 10:25:31,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:25:31,786 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:31,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash -783340119, now seen corresponding path program 2 times [2022-07-12 10:25:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:31,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839191495] [2022-07-12 10:25:31,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:31,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:31,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:31,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839191495] [2022-07-12 10:25:31,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839191495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:31,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:31,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:31,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268538862] [2022-07-12 10:25:31,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:31,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:31,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:31,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:31,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:31,902 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:31,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 297 transitions, 4670 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:31,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:31,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:32,569 INFO L129 PetriNetUnfolder]: 697/5537 cut-off events. [2022-07-12 10:25:32,570 INFO L130 PetriNetUnfolder]: For 25520/25680 co-relation queries the response was YES. [2022-07-12 10:25:32,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15367 conditions, 5537 events. 697/5537 cut-off events. For 25520/25680 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 66470 event pairs, 258 based on Foata normal form. 39/5340 useless extension candidates. Maximal degree in co-relation 13388. Up to 874 conditions per place. [2022-07-12 10:25:32,629 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 211 selfloop transitions, 32 changer transitions 2/337 dead transitions. [2022-07-12 10:25:32,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 337 transitions, 5774 flow [2022-07-12 10:25:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 539 transitions. [2022-07-12 10:25:32,631 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8693548387096774 [2022-07-12 10:25:32,631 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 539 transitions. [2022-07-12 10:25:32,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 539 transitions. [2022-07-12 10:25:32,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:32,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 539 transitions. [2022-07-12 10:25:32,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,635 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,635 INFO L186 Difference]: Start difference. First operand has 219 places, 297 transitions, 4670 flow. Second operand 5 states and 539 transitions. [2022-07-12 10:25:32,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 337 transitions, 5774 flow [2022-07-12 10:25:32,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 337 transitions, 5731 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:32,776 INFO L242 Difference]: Finished difference. Result has 225 places, 310 transitions, 5041 flow [2022-07-12 10:25:32,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4630, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5041, PETRI_PLACES=225, PETRI_TRANSITIONS=310} [2022-07-12 10:25:32,778 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 113 predicate places. [2022-07-12 10:25:32,778 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 310 transitions, 5041 flow [2022-07-12 10:25:32,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,778 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:32,778 INFO L200 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] [2022-07-12 10:25:32,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:25:32,779 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:32,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:32,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1880774753, now seen corresponding path program 6 times [2022-07-12 10:25:32,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:32,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53365019] [2022-07-12 10:25:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:32,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:32,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:32,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53365019] [2022-07-12 10:25:32,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53365019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:32,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:32,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:32,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67250575] [2022-07-12 10:25:32,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:32,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:32,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:32,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:32,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:32,852 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:32,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 310 transitions, 5041 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:32,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:32,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:33,653 INFO L129 PetriNetUnfolder]: 706/5564 cut-off events. [2022-07-12 10:25:33,654 INFO L130 PetriNetUnfolder]: For 25961/26168 co-relation queries the response was YES. [2022-07-12 10:25:33,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15632 conditions, 5564 events. 706/5564 cut-off events. For 25961/26168 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 66997 event pairs, 163 based on Foata normal form. 51/5381 useless extension candidates. Maximal degree in co-relation 14960. Up to 568 conditions per place. [2022-07-12 10:25:33,694 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 186 selfloop transitions, 87 changer transitions 1/366 dead transitions. [2022-07-12 10:25:33,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 366 transitions, 6340 flow [2022-07-12 10:25:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 761 transitions. [2022-07-12 10:25:33,697 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8767281105990783 [2022-07-12 10:25:33,697 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 761 transitions. [2022-07-12 10:25:33,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 761 transitions. [2022-07-12 10:25:33,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:33,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 761 transitions. [2022-07-12 10:25:33,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,702 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,702 INFO L186 Difference]: Start difference. First operand has 225 places, 310 transitions, 5041 flow. Second operand 7 states and 761 transitions. [2022-07-12 10:25:33,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 366 transitions, 6340 flow [2022-07-12 10:25:33,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 366 transitions, 6296 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:33,818 INFO L242 Difference]: Finished difference. Result has 235 places, 323 transitions, 5610 flow [2022-07-12 10:25:33,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4985, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5610, PETRI_PLACES=235, PETRI_TRANSITIONS=323} [2022-07-12 10:25:33,819 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 123 predicate places. [2022-07-12 10:25:33,820 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 323 transitions, 5610 flow [2022-07-12 10:25:33,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,820 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:33,820 INFO L200 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] [2022-07-12 10:25:33,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:25:33,821 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:33,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:33,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1891498127, now seen corresponding path program 3 times [2022-07-12 10:25:33,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:33,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554588860] [2022-07-12 10:25:33,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:33,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:33,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:33,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554588860] [2022-07-12 10:25:33,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554588860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:33,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:33,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:33,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390432078] [2022-07-12 10:25:33,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:33,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:33,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:33,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:33,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:33,932 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:33,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 323 transitions, 5610 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:33,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:33,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:34,797 INFO L129 PetriNetUnfolder]: 741/5867 cut-off events. [2022-07-12 10:25:34,797 INFO L130 PetriNetUnfolder]: For 31172/31329 co-relation queries the response was YES. [2022-07-12 10:25:34,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17052 conditions, 5867 events. 741/5867 cut-off events. For 31172/31329 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 71560 event pairs, 214 based on Foata normal form. 51/5682 useless extension candidates. Maximal degree in co-relation 16539. Up to 578 conditions per place. [2022-07-12 10:25:34,856 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 216 selfloop transitions, 69 changer transitions 3/380 dead transitions. [2022-07-12 10:25:34,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 380 transitions, 7098 flow [2022-07-12 10:25:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:25:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:25:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 658 transitions. [2022-07-12 10:25:34,859 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8844086021505376 [2022-07-12 10:25:34,859 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 658 transitions. [2022-07-12 10:25:34,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 658 transitions. [2022-07-12 10:25:34,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:34,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 658 transitions. [2022-07-12 10:25:34,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,863 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,863 INFO L186 Difference]: Start difference. First operand has 235 places, 323 transitions, 5610 flow. Second operand 6 states and 658 transitions. [2022-07-12 10:25:34,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 380 transitions, 7098 flow [2022-07-12 10:25:35,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 380 transitions, 7007 flow, removed 29 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:35,014 INFO L242 Difference]: Finished difference. Result has 242 places, 337 transitions, 6052 flow [2022-07-12 10:25:35,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5496, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6052, PETRI_PLACES=242, PETRI_TRANSITIONS=337} [2022-07-12 10:25:35,015 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 130 predicate places. [2022-07-12 10:25:35,015 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 337 transitions, 6052 flow [2022-07-12 10:25:35,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,015 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:35,016 INFO L200 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] [2022-07-12 10:25:35,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:25:35,016 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:35,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:35,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1428426577, now seen corresponding path program 4 times [2022-07-12 10:25:35,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:35,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449380572] [2022-07-12 10:25:35,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:35,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:35,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:35,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449380572] [2022-07-12 10:25:35,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449380572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:35,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:35,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:35,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942501637] [2022-07-12 10:25:35,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:35,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:35,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:35,093 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:35,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 337 transitions, 6052 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:35,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:35,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:36,020 INFO L129 PetriNetUnfolder]: 754/6059 cut-off events. [2022-07-12 10:25:36,020 INFO L130 PetriNetUnfolder]: For 33585/33806 co-relation queries the response was YES. [2022-07-12 10:25:36,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17543 conditions, 6059 events. 754/6059 cut-off events. For 33585/33806 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 74581 event pairs, 238 based on Foata normal form. 57/5853 useless extension candidates. Maximal degree in co-relation 17037. Up to 614 conditions per place. [2022-07-12 10:25:36,074 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 209 selfloop transitions, 67 changer transitions 3/371 dead transitions. [2022-07-12 10:25:36,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 371 transitions, 7116 flow [2022-07-12 10:25:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:36,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-07-12 10:25:36,076 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-07-12 10:25:36,077 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-07-12 10:25:36,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-07-12 10:25:36,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:36,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-07-12 10:25:36,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,080 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,080 INFO L186 Difference]: Start difference. First operand has 242 places, 337 transitions, 6052 flow. Second operand 5 states and 548 transitions. [2022-07-12 10:25:36,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 371 transitions, 7116 flow [2022-07-12 10:25:36,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 371 transitions, 7055 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:36,233 INFO L242 Difference]: Finished difference. Result has 248 places, 348 transitions, 6461 flow [2022-07-12 10:25:36,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5968, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6461, PETRI_PLACES=248, PETRI_TRANSITIONS=348} [2022-07-12 10:25:36,234 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 136 predicate places. [2022-07-12 10:25:36,234 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 348 transitions, 6461 flow [2022-07-12 10:25:36,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,234 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:36,235 INFO L200 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] [2022-07-12 10:25:36,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:25:36,235 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:36,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:36,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2478427, now seen corresponding path program 5 times [2022-07-12 10:25:36,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:36,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221063856] [2022-07-12 10:25:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:36,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:36,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:36,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221063856] [2022-07-12 10:25:36,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221063856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:36,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:36,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:36,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57487913] [2022-07-12 10:25:36,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:36,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:36,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:36,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:36,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:36,342 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:36,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 348 transitions, 6461 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:36,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:36,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:37,214 INFO L129 PetriNetUnfolder]: 768/6283 cut-off events. [2022-07-12 10:25:37,214 INFO L130 PetriNetUnfolder]: For 33542/33782 co-relation queries the response was YES. [2022-07-12 10:25:37,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18145 conditions, 6283 events. 768/6283 cut-off events. For 33542/33782 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 77908 event pairs, 263 based on Foata normal form. 59/6072 useless extension candidates. Maximal degree in co-relation 17557. Up to 966 conditions per place. [2022-07-12 10:25:37,278 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 235 selfloop transitions, 40 changer transitions 1/368 dead transitions. [2022-07-12 10:25:37,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 368 transitions, 7232 flow [2022-07-12 10:25:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-07-12 10:25:37,280 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.867741935483871 [2022-07-12 10:25:37,280 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-07-12 10:25:37,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-07-12 10:25:37,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:37,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-07-12 10:25:37,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,283 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,283 INFO L186 Difference]: Start difference. First operand has 248 places, 348 transitions, 6461 flow. Second operand 5 states and 538 transitions. [2022-07-12 10:25:37,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 368 transitions, 7232 flow [2022-07-12 10:25:37,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 368 transitions, 7164 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:37,493 INFO L242 Difference]: Finished difference. Result has 252 places, 348 transitions, 6490 flow [2022-07-12 10:25:37,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6354, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6490, PETRI_PLACES=252, PETRI_TRANSITIONS=348} [2022-07-12 10:25:37,494 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 140 predicate places. [2022-07-12 10:25:37,494 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 348 transitions, 6490 flow [2022-07-12 10:25:37,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,494 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:37,494 INFO L200 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] [2022-07-12 10:25:37,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:25:37,495 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:37,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:37,495 INFO L85 PathProgramCache]: Analyzing trace with hash -978243713, now seen corresponding path program 3 times [2022-07-12 10:25:37,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:37,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948198030] [2022-07-12 10:25:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:37,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:37,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948198030] [2022-07-12 10:25:37,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948198030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:37,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:37,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:37,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152812622] [2022-07-12 10:25:37,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:37,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:37,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:37,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:37,555 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:37,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 348 transitions, 6490 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:37,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:37,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:38,492 INFO L129 PetriNetUnfolder]: 762/6446 cut-off events. [2022-07-12 10:25:38,493 INFO L130 PetriNetUnfolder]: For 35285/35512 co-relation queries the response was YES. [2022-07-12 10:25:38,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18348 conditions, 6446 events. 762/6446 cut-off events. For 35285/35512 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 80789 event pairs, 213 based on Foata normal form. 73/6266 useless extension candidates. Maximal degree in co-relation 17805. Up to 627 conditions per place. [2022-07-12 10:25:38,564 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 221 selfloop transitions, 65 changer transitions 0/378 dead transitions. [2022-07-12 10:25:38,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 378 transitions, 7444 flow [2022-07-12 10:25:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2022-07-12 10:25:38,568 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.882258064516129 [2022-07-12 10:25:38,568 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2022-07-12 10:25:38,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2022-07-12 10:25:38,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:38,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2022-07-12 10:25:38,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,572 INFO L186 Difference]: Start difference. First operand has 252 places, 348 transitions, 6490 flow. Second operand 5 states and 547 transitions. [2022-07-12 10:25:38,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 378 transitions, 7444 flow [2022-07-12 10:25:38,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 378 transitions, 7424 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:38,728 INFO L242 Difference]: Finished difference. Result has 258 places, 351 transitions, 6767 flow [2022-07-12 10:25:38,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6767, PETRI_PLACES=258, PETRI_TRANSITIONS=351} [2022-07-12 10:25:38,728 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 146 predicate places. [2022-07-12 10:25:38,729 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 351 transitions, 6767 flow [2022-07-12 10:25:38,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,729 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:38,729 INFO L200 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] [2022-07-12 10:25:38,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:25:38,730 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:38,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1567737507, now seen corresponding path program 4 times [2022-07-12 10:25:38,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:38,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100037063] [2022-07-12 10:25:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:38,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:38,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:38,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100037063] [2022-07-12 10:25:38,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100037063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:38,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:38,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:38,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276508863] [2022-07-12 10:25:38,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:38,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:38,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:38,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:38,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:38,799 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:38,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 351 transitions, 6767 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:38,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:38,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:39,798 INFO L129 PetriNetUnfolder]: 734/6048 cut-off events. [2022-07-12 10:25:39,798 INFO L130 PetriNetUnfolder]: For 36862/37100 co-relation queries the response was YES. [2022-07-12 10:25:39,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17880 conditions, 6048 events. 734/6048 cut-off events. For 36862/37100 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 74631 event pairs, 184 based on Foata normal form. 70/5858 useless extension candidates. Maximal degree in co-relation 17252. Up to 574 conditions per place. [2022-07-12 10:25:39,868 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 224 selfloop transitions, 62 changer transitions 0/378 dead transitions. [2022-07-12 10:25:39,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 378 transitions, 7682 flow [2022-07-12 10:25:39,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2022-07-12 10:25:39,870 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.882258064516129 [2022-07-12 10:25:39,870 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2022-07-12 10:25:39,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2022-07-12 10:25:39,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:39,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2022-07-12 10:25:39,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,873 INFO L186 Difference]: Start difference. First operand has 258 places, 351 transitions, 6767 flow. Second operand 5 states and 547 transitions. [2022-07-12 10:25:39,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 378 transitions, 7682 flow [2022-07-12 10:25:40,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 378 transitions, 7670 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:40,069 INFO L242 Difference]: Finished difference. Result has 264 places, 352 transitions, 6950 flow [2022-07-12 10:25:40,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6755, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6950, PETRI_PLACES=264, PETRI_TRANSITIONS=352} [2022-07-12 10:25:40,070 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 152 predicate places. [2022-07-12 10:25:40,070 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 352 transitions, 6950 flow [2022-07-12 10:25:40,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,070 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:40,070 INFO L200 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] [2022-07-12 10:25:40,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:25:40,070 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:40,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1740125745, now seen corresponding path program 7 times [2022-07-12 10:25:40,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:40,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760517928] [2022-07-12 10:25:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:40,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:40,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:40,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760517928] [2022-07-12 10:25:40,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760517928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:40,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:40,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:40,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002889556] [2022-07-12 10:25:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:40,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:40,144 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:40,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 352 transitions, 6950 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:40,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:40,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:41,099 INFO L129 PetriNetUnfolder]: 770/6428 cut-off events. [2022-07-12 10:25:41,099 INFO L130 PetriNetUnfolder]: For 38664/38913 co-relation queries the response was YES. [2022-07-12 10:25:41,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18821 conditions, 6428 events. 770/6428 cut-off events. For 38664/38913 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 80363 event pairs, 189 based on Foata normal form. 67/6226 useless extension candidates. Maximal degree in co-relation 18176. Up to 777 conditions per place. [2022-07-12 10:25:41,144 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 233 selfloop transitions, 53 changer transitions 0/378 dead transitions. [2022-07-12 10:25:41,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 378 transitions, 7887 flow [2022-07-12 10:25:41,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2022-07-12 10:25:41,145 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2022-07-12 10:25:41,145 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2022-07-12 10:25:41,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2022-07-12 10:25:41,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:41,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2022-07-12 10:25:41,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,148 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,148 INFO L186 Difference]: Start difference. First operand has 264 places, 352 transitions, 6950 flow. Second operand 5 states and 541 transitions. [2022-07-12 10:25:41,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 378 transitions, 7887 flow [2022-07-12 10:25:41,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 378 transitions, 7797 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:41,309 INFO L242 Difference]: Finished difference. Result has 269 places, 360 transitions, 7230 flow [2022-07-12 10:25:41,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6862, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7230, PETRI_PLACES=269, PETRI_TRANSITIONS=360} [2022-07-12 10:25:41,310 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 157 predicate places. [2022-07-12 10:25:41,310 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 360 transitions, 7230 flow [2022-07-12 10:25:41,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,311 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:41,311 INFO L200 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] [2022-07-12 10:25:41,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:25:41,311 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1320164269, now seen corresponding path program 8 times [2022-07-12 10:25:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:41,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035730849] [2022-07-12 10:25:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:41,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:41,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:41,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035730849] [2022-07-12 10:25:41,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035730849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:41,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:41,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:41,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357669546] [2022-07-12 10:25:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:41,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:41,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:41,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:41,372 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:41,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 360 transitions, 7230 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:41,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:41,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:42,231 INFO L129 PetriNetUnfolder]: 765/6420 cut-off events. [2022-07-12 10:25:42,231 INFO L130 PetriNetUnfolder]: For 41329/41587 co-relation queries the response was YES. [2022-07-12 10:25:42,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18852 conditions, 6420 events. 765/6420 cut-off events. For 41329/41587 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 80151 event pairs, 185 based on Foata normal form. 78/6232 useless extension candidates. Maximal degree in co-relation 18227. Up to 645 conditions per place. [2022-07-12 10:25:42,306 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 221 selfloop transitions, 81 changer transitions 3/397 dead transitions. [2022-07-12 10:25:42,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 397 transitions, 8414 flow [2022-07-12 10:25:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:25:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:25:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2022-07-12 10:25:42,307 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8884408602150538 [2022-07-12 10:25:42,308 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 661 transitions. [2022-07-12 10:25:42,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 661 transitions. [2022-07-12 10:25:42,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:42,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 661 transitions. [2022-07-12 10:25:42,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,311 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,311 INFO L186 Difference]: Start difference. First operand has 269 places, 360 transitions, 7230 flow. Second operand 6 states and 661 transitions. [2022-07-12 10:25:42,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 397 transitions, 8414 flow [2022-07-12 10:25:42,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 397 transitions, 8360 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:42,512 INFO L242 Difference]: Finished difference. Result has 275 places, 365 transitions, 7605 flow [2022-07-12 10:25:42,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7145, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7605, PETRI_PLACES=275, PETRI_TRANSITIONS=365} [2022-07-12 10:25:42,512 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 163 predicate places. [2022-07-12 10:25:42,513 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 365 transitions, 7605 flow [2022-07-12 10:25:42,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,513 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:42,513 INFO L200 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] [2022-07-12 10:25:42,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:25:42,513 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:42,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:42,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1717712703, now seen corresponding path program 5 times [2022-07-12 10:25:42,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:42,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910835103] [2022-07-12 10:25:42,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:42,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:42,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:42,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910835103] [2022-07-12 10:25:42,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910835103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:42,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:42,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:42,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722954964] [2022-07-12 10:25:42,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:42,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:42,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:42,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:42,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:42,573 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:42,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 365 transitions, 7605 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:42,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:42,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:43,471 INFO L129 PetriNetUnfolder]: 705/5973 cut-off events. [2022-07-12 10:25:43,471 INFO L130 PetriNetUnfolder]: For 45064/45248 co-relation queries the response was YES. [2022-07-12 10:25:43,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18107 conditions, 5973 events. 705/5973 cut-off events. For 45064/45248 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 74147 event pairs, 186 based on Foata normal form. 60/5809 useless extension candidates. Maximal degree in co-relation 17492. Up to 578 conditions per place. [2022-07-12 10:25:43,552 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 206 selfloop transitions, 105 changer transitions 2/405 dead transitions. [2022-07-12 10:25:43,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 405 transitions, 8771 flow [2022-07-12 10:25:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:43,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 761 transitions. [2022-07-12 10:25:43,554 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8767281105990783 [2022-07-12 10:25:43,554 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 761 transitions. [2022-07-12 10:25:43,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 761 transitions. [2022-07-12 10:25:43,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:43,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 761 transitions. [2022-07-12 10:25:43,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,557 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,557 INFO L186 Difference]: Start difference. First operand has 275 places, 365 transitions, 7605 flow. Second operand 7 states and 761 transitions. [2022-07-12 10:25:43,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 405 transitions, 8771 flow [2022-07-12 10:25:43,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 405 transitions, 8580 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-07-12 10:25:43,759 INFO L242 Difference]: Finished difference. Result has 279 places, 372 transitions, 7959 flow [2022-07-12 10:25:43,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7398, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7959, PETRI_PLACES=279, PETRI_TRANSITIONS=372} [2022-07-12 10:25:43,760 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 167 predicate places. [2022-07-12 10:25:43,760 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 372 transitions, 7959 flow [2022-07-12 10:25:43,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,761 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:43,761 INFO L200 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] [2022-07-12 10:25:43,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:25:43,761 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:43,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1655621339, now seen corresponding path program 9 times [2022-07-12 10:25:43,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:43,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505215775] [2022-07-12 10:25:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:43,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:43,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:43,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505215775] [2022-07-12 10:25:43,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505215775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:43,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:43,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:43,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004164607] [2022-07-12 10:25:43,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:43,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:43,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:43,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:43,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:43,842 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:43,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 372 transitions, 7959 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:43,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:43,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:44,736 INFO L129 PetriNetUnfolder]: 777/6440 cut-off events. [2022-07-12 10:25:44,736 INFO L130 PetriNetUnfolder]: For 47818/48085 co-relation queries the response was YES. [2022-07-12 10:25:44,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19486 conditions, 6440 events. 777/6440 cut-off events. For 47818/48085 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 80673 event pairs, 263 based on Foata normal form. 68/6236 useless extension candidates. Maximal degree in co-relation 18854. Up to 657 conditions per place. [2022-07-12 10:25:44,815 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 248 selfloop transitions, 61 changer transitions 0/401 dead transitions. [2022-07-12 10:25:44,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 401 transitions, 9073 flow [2022-07-12 10:25:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2022-07-12 10:25:44,817 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758064516129033 [2022-07-12 10:25:44,817 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2022-07-12 10:25:44,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2022-07-12 10:25:44,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:44,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2022-07-12 10:25:44,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,818 INFO L186 Difference]: Start difference. First operand has 279 places, 372 transitions, 7959 flow. Second operand 5 states and 543 transitions. [2022-07-12 10:25:44,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 401 transitions, 9073 flow [2022-07-12 10:25:45,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 401 transitions, 8964 flow, removed 29 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:45,038 INFO L242 Difference]: Finished difference. Result has 284 places, 381 transitions, 8362 flow [2022-07-12 10:25:45,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7852, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8362, PETRI_PLACES=284, PETRI_TRANSITIONS=381} [2022-07-12 10:25:45,038 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 172 predicate places. [2022-07-12 10:25:45,039 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 381 transitions, 8362 flow [2022-07-12 10:25:45,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:45,039 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:45,039 INFO L200 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] [2022-07-12 10:25:45,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:25:45,039 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:45,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1999693023, now seen corresponding path program 6 times [2022-07-12 10:25:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:45,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256799047] [2022-07-12 10:25:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:45,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:45,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:45,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256799047] [2022-07-12 10:25:45,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256799047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:45,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:45,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:45,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679600281] [2022-07-12 10:25:45,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:45,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:45,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:45,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:45,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:45,111 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:45,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 381 transitions, 8362 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:45,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:45,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:45,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:46,032 INFO L129 PetriNetUnfolder]: 765/6422 cut-off events. [2022-07-12 10:25:46,032 INFO L130 PetriNetUnfolder]: For 52709/52959 co-relation queries the response was YES. [2022-07-12 10:25:46,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19687 conditions, 6422 events. 765/6422 cut-off events. For 52709/52959 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 80573 event pairs, 210 based on Foata normal form. 90/6256 useless extension candidates. Maximal degree in co-relation 19070. Up to 620 conditions per place. [2022-07-12 10:25:46,113 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 247 selfloop transitions, 91 changer transitions 11/441 dead transitions. [2022-07-12 10:25:46,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 441 transitions, 10524 flow [2022-07-12 10:25:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2022-07-12 10:25:46,114 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2022-07-12 10:25:46,114 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2022-07-12 10:25:46,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2022-07-12 10:25:46,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:46,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2022-07-12 10:25:46,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,116 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,116 INFO L186 Difference]: Start difference. First operand has 284 places, 381 transitions, 8362 flow. Second operand 5 states and 551 transitions. [2022-07-12 10:25:46,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 441 transitions, 10524 flow [2022-07-12 10:25:46,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 441 transitions, 10518 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:46,360 INFO L242 Difference]: Finished difference. Result has 291 places, 402 transitions, 9400 flow [2022-07-12 10:25:46,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8297, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9400, PETRI_PLACES=291, PETRI_TRANSITIONS=402} [2022-07-12 10:25:46,360 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 179 predicate places. [2022-07-12 10:25:46,361 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 402 transitions, 9400 flow [2022-07-12 10:25:46,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,361 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:46,361 INFO L200 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] [2022-07-12 10:25:46,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:25:46,361 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:46,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1157485625, now seen corresponding path program 10 times [2022-07-12 10:25:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:46,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061751624] [2022-07-12 10:25:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:46,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:46,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:46,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061751624] [2022-07-12 10:25:46,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061751624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:46,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:46,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:46,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509030095] [2022-07-12 10:25:46,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:46,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:46,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:46,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:46,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:46,423 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:46,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 402 transitions, 9400 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:46,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:46,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:47,432 INFO L129 PetriNetUnfolder]: 731/6073 cut-off events. [2022-07-12 10:25:47,432 INFO L130 PetriNetUnfolder]: For 52979/53254 co-relation queries the response was YES. [2022-07-12 10:25:47,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19170 conditions, 6073 events. 731/6073 cut-off events. For 52979/53254 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 75218 event pairs, 176 based on Foata normal form. 88/5900 useless extension candidates. Maximal degree in co-relation 18489. Up to 592 conditions per place. [2022-07-12 10:25:47,483 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 243 selfloop transitions, 90 changer transitions 11/436 dead transitions. [2022-07-12 10:25:47,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 436 transitions, 10708 flow [2022-07-12 10:25:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:47,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2022-07-12 10:25:47,484 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-12 10:25:47,485 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2022-07-12 10:25:47,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2022-07-12 10:25:47,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:47,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2022-07-12 10:25:47,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,487 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,487 INFO L186 Difference]: Start difference. First operand has 291 places, 402 transitions, 9400 flow. Second operand 5 states and 550 transitions. [2022-07-12 10:25:47,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 436 transitions, 10708 flow [2022-07-12 10:25:47,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 436 transitions, 10627 flow, removed 22 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:47,719 INFO L242 Difference]: Finished difference. Result has 297 places, 405 transitions, 9695 flow [2022-07-12 10:25:47,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9076, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9695, PETRI_PLACES=297, PETRI_TRANSITIONS=405} [2022-07-12 10:25:47,719 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 185 predicate places. [2022-07-12 10:25:47,719 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 405 transitions, 9695 flow [2022-07-12 10:25:47,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:47,720 INFO L200 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] [2022-07-12 10:25:47,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:25:47,720 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:47,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash 286651317, now seen corresponding path program 7 times [2022-07-12 10:25:47,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:47,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369881031] [2022-07-12 10:25:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:47,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:47,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:47,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369881031] [2022-07-12 10:25:47,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369881031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:47,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:47,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:47,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690328589] [2022-07-12 10:25:47,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:47,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:47,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:47,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:47,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:47,788 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:47,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 405 transitions, 9695 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:47,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:47,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:48,701 INFO L129 PetriNetUnfolder]: 721/6089 cut-off events. [2022-07-12 10:25:48,702 INFO L130 PetriNetUnfolder]: For 53117/53364 co-relation queries the response was YES. [2022-07-12 10:25:48,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19257 conditions, 6089 events. 721/6089 cut-off events. For 53117/53364 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 75528 event pairs, 177 based on Foata normal form. 82/5916 useless extension candidates. Maximal degree in co-relation 18617. Up to 611 conditions per place. [2022-07-12 10:25:48,785 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 267 selfloop transitions, 85 changer transitions 2/446 dead transitions. [2022-07-12 10:25:48,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 446 transitions, 11299 flow [2022-07-12 10:25:48,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-07-12 10:25:48,787 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2022-07-12 10:25:48,787 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-07-12 10:25:48,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-07-12 10:25:48,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:48,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-07-12 10:25:48,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,788 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,788 INFO L186 Difference]: Start difference. First operand has 297 places, 405 transitions, 9695 flow. Second operand 5 states and 553 transitions. [2022-07-12 10:25:48,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 446 transitions, 11299 flow [2022-07-12 10:25:49,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 446 transitions, 11146 flow, removed 28 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:49,067 INFO L242 Difference]: Finished difference. Result has 302 places, 414 transitions, 10230 flow [2022-07-12 10:25:49,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9428, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10230, PETRI_PLACES=302, PETRI_TRANSITIONS=414} [2022-07-12 10:25:49,068 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 190 predicate places. [2022-07-12 10:25:49,068 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 414 transitions, 10230 flow [2022-07-12 10:25:49,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,069 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:49,069 INFO L200 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] [2022-07-12 10:25:49,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:25:49,069 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:49,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash 391902859, now seen corresponding path program 8 times [2022-07-12 10:25:49,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:49,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825458494] [2022-07-12 10:25:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:49,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:49,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825458494] [2022-07-12 10:25:49,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825458494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:49,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:49,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:49,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952537669] [2022-07-12 10:25:49,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:49,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:49,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:49,141 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:49,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 414 transitions, 10230 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:49,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:49,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:50,076 INFO L129 PetriNetUnfolder]: 759/6224 cut-off events. [2022-07-12 10:25:50,077 INFO L130 PetriNetUnfolder]: For 56114/56400 co-relation queries the response was YES. [2022-07-12 10:25:50,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19976 conditions, 6224 events. 759/6224 cut-off events. For 56114/56400 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 77612 event pairs, 211 based on Foata normal form. 79/6036 useless extension candidates. Maximal degree in co-relation 19262. Up to 634 conditions per place. [2022-07-12 10:25:50,150 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 267 selfloop transitions, 81 changer transitions 1/441 dead transitions. [2022-07-12 10:25:50,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 441 transitions, 11357 flow [2022-07-12 10:25:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:50,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:50,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2022-07-12 10:25:50,151 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758064516129033 [2022-07-12 10:25:50,151 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2022-07-12 10:25:50,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2022-07-12 10:25:50,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:50,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2022-07-12 10:25:50,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,264 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,264 INFO L186 Difference]: Start difference. First operand has 302 places, 414 transitions, 10230 flow. Second operand 5 states and 543 transitions. [2022-07-12 10:25:50,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 441 transitions, 11357 flow [2022-07-12 10:25:50,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 441 transitions, 11296 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:50,529 INFO L242 Difference]: Finished difference. Result has 307 places, 421 transitions, 10593 flow [2022-07-12 10:25:50,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10078, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10593, PETRI_PLACES=307, PETRI_TRANSITIONS=421} [2022-07-12 10:25:50,530 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 195 predicate places. [2022-07-12 10:25:50,530 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 421 transitions, 10593 flow [2022-07-12 10:25:50,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,531 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:50,531 INFO L200 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] [2022-07-12 10:25:50,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 10:25:50,531 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:50,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:50,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1302414471, now seen corresponding path program 6 times [2022-07-12 10:25:50,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:50,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276072614] [2022-07-12 10:25:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:50,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:50,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:50,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276072614] [2022-07-12 10:25:50,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276072614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:50,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:50,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:50,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362281292] [2022-07-12 10:25:50,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:50,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:50,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:50,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:50,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:50,605 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:50,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 421 transitions, 10593 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:50,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:50,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:51,743 INFO L129 PetriNetUnfolder]: 821/6884 cut-off events. [2022-07-12 10:25:51,744 INFO L130 PetriNetUnfolder]: For 62322/62656 co-relation queries the response was YES. [2022-07-12 10:25:51,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21853 conditions, 6884 events. 821/6884 cut-off events. For 62322/62656 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 87772 event pairs, 228 based on Foata normal form. 88/6688 useless extension candidates. Maximal degree in co-relation 21200. Up to 677 conditions per place. [2022-07-12 10:25:51,844 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 263 selfloop transitions, 115 changer transitions 1/471 dead transitions. [2022-07-12 10:25:51,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 471 transitions, 12559 flow [2022-07-12 10:25:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2022-07-12 10:25:51,846 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-12 10:25:51,846 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2022-07-12 10:25:51,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2022-07-12 10:25:51,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:51,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2022-07-12 10:25:51,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,848 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,848 INFO L186 Difference]: Start difference. First operand has 307 places, 421 transitions, 10593 flow. Second operand 5 states and 550 transitions. [2022-07-12 10:25:51,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 471 transitions, 12559 flow [2022-07-12 10:25:52,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 471 transitions, 12523 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:52,221 INFO L242 Difference]: Finished difference. Result has 311 places, 442 transitions, 11730 flow [2022-07-12 10:25:52,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10519, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11730, PETRI_PLACES=311, PETRI_TRANSITIONS=442} [2022-07-12 10:25:52,222 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 199 predicate places. [2022-07-12 10:25:52,222 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 442 transitions, 11730 flow [2022-07-12 10:25:52,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,223 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:52,223 INFO L200 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] [2022-07-12 10:25:52,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 10:25:52,223 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:52,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1683146627, now seen corresponding path program 4 times [2022-07-12 10:25:52,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:52,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100469032] [2022-07-12 10:25:52,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:52,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:52,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:52,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100469032] [2022-07-12 10:25:52,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100469032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:52,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:52,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:52,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240014231] [2022-07-12 10:25:52,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:52,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:52,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:52,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:52,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:52,290 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:52,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 442 transitions, 11730 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:52,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:52,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:53,475 INFO L129 PetriNetUnfolder]: 851/7234 cut-off events. [2022-07-12 10:25:53,475 INFO L130 PetriNetUnfolder]: For 70798/71154 co-relation queries the response was YES. [2022-07-12 10:25:53,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23009 conditions, 7234 events. 851/7234 cut-off events. For 70798/71154 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 93408 event pairs, 241 based on Foata normal form. 104/7045 useless extension candidates. Maximal degree in co-relation 22071. Up to 746 conditions per place. [2022-07-12 10:25:53,536 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 281 selfloop transitions, 94 changer transitions 5/472 dead transitions. [2022-07-12 10:25:53,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 472 transitions, 12958 flow [2022-07-12 10:25:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2022-07-12 10:25:53,537 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8935483870967742 [2022-07-12 10:25:53,537 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2022-07-12 10:25:53,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2022-07-12 10:25:53,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:53,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2022-07-12 10:25:53,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:53,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:53,539 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:53,539 INFO L186 Difference]: Start difference. First operand has 311 places, 442 transitions, 11730 flow. Second operand 5 states and 554 transitions. [2022-07-12 10:25:53,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 472 transitions, 12958 flow [2022-07-12 10:25:53,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 472 transitions, 12882 flow, removed 16 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:53,931 INFO L242 Difference]: Finished difference. Result has 317 places, 446 transitions, 12081 flow [2022-07-12 10:25:53,931 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11516, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12081, PETRI_PLACES=317, PETRI_TRANSITIONS=446} [2022-07-12 10:25:53,932 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 205 predicate places. [2022-07-12 10:25:53,932 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 446 transitions, 12081 flow [2022-07-12 10:25:53,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:53,933 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:53,933 INFO L200 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] [2022-07-12 10:25:53,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:25:53,933 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:53,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:53,934 INFO L85 PathProgramCache]: Analyzing trace with hash 154583419, now seen corresponding path program 7 times [2022-07-12 10:25:53,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:53,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939878147] [2022-07-12 10:25:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:53,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:54,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:54,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939878147] [2022-07-12 10:25:54,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939878147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:54,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:54,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:54,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940632039] [2022-07-12 10:25:54,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:54,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:54,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:54,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:54,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:54,006 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:54,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 446 transitions, 12081 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:54,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:54,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:54,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:55,200 INFO L129 PetriNetUnfolder]: 844/7238 cut-off events. [2022-07-12 10:25:55,200 INFO L130 PetriNetUnfolder]: For 71976/72334 co-relation queries the response was YES. [2022-07-12 10:25:55,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23201 conditions, 7238 events. 844/7238 cut-off events. For 71976/72334 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 93384 event pairs, 253 based on Foata normal form. 91/7034 useless extension candidates. Maximal degree in co-relation 22263. Up to 746 conditions per place. [2022-07-12 10:25:55,302 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 273 selfloop transitions, 97 changer transitions 0/462 dead transitions. [2022-07-12 10:25:55,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 462 transitions, 12985 flow [2022-07-12 10:25:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2022-07-12 10:25:55,303 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758064516129033 [2022-07-12 10:25:55,303 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2022-07-12 10:25:55,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2022-07-12 10:25:55,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:55,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2022-07-12 10:25:55,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:55,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:55,305 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:55,305 INFO L186 Difference]: Start difference. First operand has 317 places, 446 transitions, 12081 flow. Second operand 5 states and 543 transitions. [2022-07-12 10:25:55,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 462 transitions, 12985 flow [2022-07-12 10:25:55,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 462 transitions, 12923 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:55,759 INFO L242 Difference]: Finished difference. Result has 320 places, 445 transitions, 12185 flow [2022-07-12 10:25:55,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11991, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12185, PETRI_PLACES=320, PETRI_TRANSITIONS=445} [2022-07-12 10:25:55,760 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 208 predicate places. [2022-07-12 10:25:55,761 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 445 transitions, 12185 flow [2022-07-12 10:25:55,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:55,761 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:55,761 INFO L200 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] [2022-07-12 10:25:55,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:25:55,761 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:55,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:55,762 INFO L85 PathProgramCache]: Analyzing trace with hash 909936171, now seen corresponding path program 8 times [2022-07-12 10:25:55,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:55,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823909452] [2022-07-12 10:25:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:55,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:55,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:55,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823909452] [2022-07-12 10:25:55,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823909452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:55,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:55,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:55,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218505952] [2022-07-12 10:25:55,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:55,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:55,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:55,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:55,817 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:55,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 445 transitions, 12185 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:55,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:55,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:55,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:57,234 INFO L129 PetriNetUnfolder]: 823/6976 cut-off events. [2022-07-12 10:25:57,235 INFO L130 PetriNetUnfolder]: For 74897/75237 co-relation queries the response was YES. [2022-07-12 10:25:57,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22639 conditions, 6976 events. 823/6976 cut-off events. For 74897/75237 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 89380 event pairs, 215 based on Foata normal form. 94/6797 useless extension candidates. Maximal degree in co-relation 21701. Up to 707 conditions per place. [2022-07-12 10:25:57,318 INFO L132 encePairwiseOnDemand]: 108/124 looper letters, 254 selfloop transitions, 111 changer transitions 3/460 dead transitions. [2022-07-12 10:25:57,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 460 transitions, 12796 flow [2022-07-12 10:25:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:25:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:25:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 660 transitions. [2022-07-12 10:25:57,320 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-12 10:25:57,320 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 660 transitions. [2022-07-12 10:25:57,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 660 transitions. [2022-07-12 10:25:57,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:57,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 660 transitions. [2022-07-12 10:25:57,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:57,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:57,322 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:57,323 INFO L186 Difference]: Start difference. First operand has 320 places, 445 transitions, 12185 flow. Second operand 6 states and 660 transitions. [2022-07-12 10:25:57,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 460 transitions, 12796 flow [2022-07-12 10:25:57,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 460 transitions, 12732 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:57,724 INFO L242 Difference]: Finished difference. Result has 324 places, 436 transitions, 11921 flow [2022-07-12 10:25:57,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11787, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11921, PETRI_PLACES=324, PETRI_TRANSITIONS=436} [2022-07-12 10:25:57,725 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 212 predicate places. [2022-07-12 10:25:57,725 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 436 transitions, 11921 flow [2022-07-12 10:25:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:57,726 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:57,726 INFO L200 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] [2022-07-12 10:25:57,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 10:25:57,726 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash -261852381, now seen corresponding path program 5 times [2022-07-12 10:25:57,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:57,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985250522] [2022-07-12 10:25:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:57,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:57,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:57,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985250522] [2022-07-12 10:25:57,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985250522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:57,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:57,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:57,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287065586] [2022-07-12 10:25:57,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:57,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:57,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:57,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:57,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:57,812 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:57,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 436 transitions, 11921 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:57,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:57,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:57,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:59,085 INFO L129 PetriNetUnfolder]: 832/7095 cut-off events. [2022-07-12 10:25:59,086 INFO L130 PetriNetUnfolder]: For 72029/72386 co-relation queries the response was YES. [2022-07-12 10:25:59,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22990 conditions, 7095 events. 832/7095 cut-off events. For 72029/72386 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 91144 event pairs, 257 based on Foata normal form. 93/6896 useless extension candidates. Maximal degree in co-relation 22046. Up to 740 conditions per place. [2022-07-12 10:25:59,180 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 284 selfloop transitions, 78 changer transitions 1/455 dead transitions. [2022-07-12 10:25:59,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 455 transitions, 12872 flow [2022-07-12 10:25:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:59,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2022-07-12 10:25:59,181 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2022-07-12 10:25:59,181 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2022-07-12 10:25:59,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2022-07-12 10:25:59,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:59,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2022-07-12 10:25:59,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:59,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:59,183 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:59,183 INFO L186 Difference]: Start difference. First operand has 324 places, 436 transitions, 11921 flow. Second operand 5 states and 541 transitions. [2022-07-12 10:25:59,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 455 transitions, 12872 flow [2022-07-12 10:25:59,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 455 transitions, 12687 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-07-12 10:25:59,678 INFO L242 Difference]: Finished difference. Result has 326 places, 437 transitions, 11966 flow [2022-07-12 10:25:59,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11736, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11966, PETRI_PLACES=326, PETRI_TRANSITIONS=437} [2022-07-12 10:25:59,679 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 214 predicate places. [2022-07-12 10:25:59,679 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 437 transitions, 11966 flow [2022-07-12 10:25:59,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:59,680 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:59,680 INFO L200 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] [2022-07-12 10:25:59,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 10:25:59,680 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:59,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:59,680 INFO L85 PathProgramCache]: Analyzing trace with hash 745197785, now seen corresponding path program 9 times [2022-07-12 10:25:59,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:59,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775383659] [2022-07-12 10:25:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:59,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:59,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775383659] [2022-07-12 10:25:59,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775383659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:59,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:59,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733515683] [2022-07-12 10:25:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:59,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:59,746 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:25:59,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 437 transitions, 11966 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:59,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:59,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:25:59,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:00,945 INFO L129 PetriNetUnfolder]: 870/7359 cut-off events. [2022-07-12 10:26:00,945 INFO L130 PetriNetUnfolder]: For 75208/75605 co-relation queries the response was YES. [2022-07-12 10:26:01,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23754 conditions, 7359 events. 870/7359 cut-off events. For 75208/75605 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 95105 event pairs, 253 based on Foata normal form. 99/7145 useless extension candidates. Maximal degree in co-relation 22910. Up to 759 conditions per place. [2022-07-12 10:26:01,151 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 279 selfloop transitions, 91 changer transitions 1/463 dead transitions. [2022-07-12 10:26:01,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 463 transitions, 13311 flow [2022-07-12 10:26:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 544 transitions. [2022-07-12 10:26:01,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8774193548387097 [2022-07-12 10:26:01,152 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 544 transitions. [2022-07-12 10:26:01,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 544 transitions. [2022-07-12 10:26:01,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:01,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 544 transitions. [2022-07-12 10:26:01,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:01,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:01,154 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:01,154 INFO L186 Difference]: Start difference. First operand has 326 places, 437 transitions, 11966 flow. Second operand 5 states and 544 transitions. [2022-07-12 10:26:01,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 463 transitions, 13311 flow [2022-07-12 10:26:01,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 463 transitions, 13174 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-07-12 10:26:01,536 INFO L242 Difference]: Finished difference. Result has 329 places, 441 transitions, 12285 flow [2022-07-12 10:26:01,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11781, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12285, PETRI_PLACES=329, PETRI_TRANSITIONS=441} [2022-07-12 10:26:01,537 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 217 predicate places. [2022-07-12 10:26:01,537 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 441 transitions, 12285 flow [2022-07-12 10:26:01,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:01,537 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:01,537 INFO L200 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] [2022-07-12 10:26:01,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 10:26:01,538 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:01,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1979299045, now seen corresponding path program 6 times [2022-07-12 10:26:01,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:01,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234171949] [2022-07-12 10:26:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:01,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:01,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:01,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234171949] [2022-07-12 10:26:01,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234171949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:01,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:01,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:26:01,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975531150] [2022-07-12 10:26:01,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:01,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:26:01,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:01,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:26:01,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:26:01,624 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:26:01,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 441 transitions, 12285 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:01,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:01,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:26:01,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:02,791 INFO L129 PetriNetUnfolder]: 853/7279 cut-off events. [2022-07-12 10:26:02,791 INFO L130 PetriNetUnfolder]: For 74587/74963 co-relation queries the response was YES. [2022-07-12 10:26:02,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23796 conditions, 7279 events. 853/7279 cut-off events. For 74587/74963 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 94061 event pairs, 234 based on Foata normal form. 95/7069 useless extension candidates. Maximal degree in co-relation 22875. Up to 731 conditions per place. [2022-07-12 10:26:02,895 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 282 selfloop transitions, 88 changer transitions 1/463 dead transitions. [2022-07-12 10:26:02,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 463 transitions, 13325 flow [2022-07-12 10:26:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-07-12 10:26:02,896 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2022-07-12 10:26:02,896 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-07-12 10:26:02,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-07-12 10:26:02,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:02,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-07-12 10:26:02,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:02,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:02,898 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:02,898 INFO L186 Difference]: Start difference. First operand has 329 places, 441 transitions, 12285 flow. Second operand 5 states and 546 transitions. [2022-07-12 10:26:02,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 463 transitions, 13325 flow [2022-07-12 10:26:03,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 463 transitions, 13184 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-07-12 10:26:03,340 INFO L242 Difference]: Finished difference. Result has 328 places, 443 transitions, 12454 flow [2022-07-12 10:26:03,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12103, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12454, PETRI_PLACES=328, PETRI_TRANSITIONS=443} [2022-07-12 10:26:03,340 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 216 predicate places. [2022-07-12 10:26:03,340 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 443 transitions, 12454 flow [2022-07-12 10:26:03,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:03,341 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:03,341 INFO L200 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] [2022-07-12 10:26:03,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 10:26:03,341 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:03,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2121405323, now seen corresponding path program 9 times [2022-07-12 10:26:03,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:03,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188644193] [2022-07-12 10:26:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:03,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:03,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:03,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188644193] [2022-07-12 10:26:03,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188644193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:03,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:03,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:26:03,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128711516] [2022-07-12 10:26:03,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:03,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:26:03,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:03,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:26:03,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:26:03,413 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:26:03,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 443 transitions, 12454 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:03,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:03,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:26:03,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:04,564 INFO L129 PetriNetUnfolder]: 847/7009 cut-off events. [2022-07-12 10:26:04,564 INFO L130 PetriNetUnfolder]: For 78986/79331 co-relation queries the response was YES. [2022-07-12 10:26:04,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23335 conditions, 7009 events. 847/7009 cut-off events. For 78986/79331 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 89440 event pairs, 218 based on Foata normal form. 101/6816 useless extension candidates. Maximal degree in co-relation 22517. Up to 736 conditions per place. [2022-07-12 10:26:04,658 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 285 selfloop transitions, 85 changer transitions 5/467 dead transitions. [2022-07-12 10:26:04,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 467 transitions, 13592 flow [2022-07-12 10:26:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2022-07-12 10:26:04,660 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-12 10:26:04,660 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2022-07-12 10:26:04,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2022-07-12 10:26:04,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:04,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2022-07-12 10:26:04,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:04,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:04,662 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:04,662 INFO L186 Difference]: Start difference. First operand has 328 places, 443 transitions, 12454 flow. Second operand 5 states and 550 transitions. [2022-07-12 10:26:04,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 467 transitions, 13592 flow [2022-07-12 10:26:05,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 467 transitions, 13420 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-07-12 10:26:05,231 INFO L242 Difference]: Finished difference. Result has 329 places, 440 transitions, 12356 flow [2022-07-12 10:26:05,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12114, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12356, PETRI_PLACES=329, PETRI_TRANSITIONS=440} [2022-07-12 10:26:05,232 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 217 predicate places. [2022-07-12 10:26:05,232 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 440 transitions, 12356 flow [2022-07-12 10:26:05,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:05,233 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:05,233 INFO L200 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] [2022-07-12 10:26:05,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-12 10:26:05,233 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:05,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:05,233 INFO L85 PathProgramCache]: Analyzing trace with hash -676483081, now seen corresponding path program 11 times [2022-07-12 10:26:05,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:05,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768776355] [2022-07-12 10:26:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:05,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:05,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:05,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768776355] [2022-07-12 10:26:05,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768776355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:05,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:05,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:26:05,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251469274] [2022-07-12 10:26:05,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:05,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:26:05,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:05,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:26:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:26:05,301 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:26:05,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 440 transitions, 12356 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:05,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:05,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:26:05,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:06,464 INFO L129 PetriNetUnfolder]: 841/7002 cut-off events. [2022-07-12 10:26:06,465 INFO L130 PetriNetUnfolder]: For 77203/77539 co-relation queries the response was YES. [2022-07-12 10:26:06,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23271 conditions, 7002 events. 841/7002 cut-off events. For 77203/77539 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 89612 event pairs, 226 based on Foata normal form. 101/6787 useless extension candidates. Maximal degree in co-relation 22234. Up to 740 conditions per place. [2022-07-12 10:26:06,576 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 285 selfloop transitions, 85 changer transitions 3/465 dead transitions. [2022-07-12 10:26:06,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 465 transitions, 13438 flow [2022-07-12 10:26:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2022-07-12 10:26:06,578 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8903225806451613 [2022-07-12 10:26:06,578 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2022-07-12 10:26:06,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2022-07-12 10:26:06,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:06,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2022-07-12 10:26:06,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,580 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,580 INFO L186 Difference]: Start difference. First operand has 329 places, 440 transitions, 12356 flow. Second operand 5 states and 552 transitions. [2022-07-12 10:26:06,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 465 transitions, 13438 flow [2022-07-12 10:26:06,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 465 transitions, 13361 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:07,006 INFO L242 Difference]: Finished difference. Result has 333 places, 441 transitions, 12619 flow [2022-07-12 10:26:07,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12144, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12619, PETRI_PLACES=333, PETRI_TRANSITIONS=441} [2022-07-12 10:26:07,008 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 221 predicate places. [2022-07-12 10:26:07,008 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 441 transitions, 12619 flow [2022-07-12 10:26:07,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:07,009 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:07,009 INFO L200 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] [2022-07-12 10:26:07,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 10:26:07,009 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:07,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:07,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1287364473, now seen corresponding path program 12 times [2022-07-12 10:26:07,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:07,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82463283] [2022-07-12 10:26:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:07,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:07,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:07,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82463283] [2022-07-12 10:26:07,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82463283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:07,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:07,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:26:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047427499] [2022-07-12 10:26:07,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:07,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:26:07,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:07,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:26:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:26:07,073 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:26:07,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 441 transitions, 12619 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:07,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:07,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:26:07,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:08,177 INFO L129 PetriNetUnfolder]: 850/6880 cut-off events. [2022-07-12 10:26:08,177 INFO L130 PetriNetUnfolder]: For 81120/81460 co-relation queries the response was YES. [2022-07-12 10:26:08,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23274 conditions, 6880 events. 850/6880 cut-off events. For 81120/81460 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 87308 event pairs, 241 based on Foata normal form. 95/6673 useless extension candidates. Maximal degree in co-relation 22456. Up to 748 conditions per place. [2022-07-12 10:26:08,270 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 283 selfloop transitions, 81 changer transitions 2/458 dead transitions. [2022-07-12 10:26:08,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 458 transitions, 13405 flow [2022-07-12 10:26:08,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:08,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:08,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2022-07-12 10:26:08,271 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-12 10:26:08,272 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2022-07-12 10:26:08,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2022-07-12 10:26:08,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:08,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2022-07-12 10:26:08,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:08,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:08,273 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:08,273 INFO L186 Difference]: Start difference. First operand has 333 places, 441 transitions, 12619 flow. Second operand 5 states and 550 transitions. [2022-07-12 10:26:08,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 458 transitions, 13405 flow [2022-07-12 10:26:08,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 458 transitions, 13269 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-07-12 10:26:08,783 INFO L242 Difference]: Finished difference. Result has 333 places, 436 transitions, 12489 flow [2022-07-12 10:26:08,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12348, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12489, PETRI_PLACES=333, PETRI_TRANSITIONS=436} [2022-07-12 10:26:08,784 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 221 predicate places. [2022-07-12 10:26:08,784 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 436 transitions, 12489 flow [2022-07-12 10:26:08,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:08,784 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:08,784 INFO L200 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] [2022-07-12 10:26:08,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-12 10:26:08,785 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:08,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1761510846, now seen corresponding path program 1 times [2022-07-12 10:26:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:08,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655075897] [2022-07-12 10:26:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:08,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:08,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:08,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655075897] [2022-07-12 10:26:08,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655075897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:08,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:08,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:26:08,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848517707] [2022-07-12 10:26:08,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:08,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:26:08,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:08,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:26:08,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:26:08,829 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:26:08,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 436 transitions, 12489 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:08,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:08,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:26:08,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:09,895 INFO L129 PetriNetUnfolder]: 554/5176 cut-off events. [2022-07-12 10:26:09,895 INFO L130 PetriNetUnfolder]: For 62104/73712 co-relation queries the response was YES. [2022-07-12 10:26:09,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16396 conditions, 5176 events. 554/5176 cut-off events. For 62104/73712 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 67173 event pairs, 146 based on Foata normal form. 158/5134 useless extension candidates. Maximal degree in co-relation 15728. Up to 674 conditions per place. [2022-07-12 10:26:09,941 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 21 selfloop transitions, 0 changer transitions 132/456 dead transitions. [2022-07-12 10:26:09,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 456 transitions, 12626 flow [2022-07-12 10:26:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:26:09,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:26:09,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 916 transitions. [2022-07-12 10:26:09,943 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8207885304659498 [2022-07-12 10:26:09,943 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 916 transitions. [2022-07-12 10:26:09,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 916 transitions. [2022-07-12 10:26:09,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:09,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 916 transitions. [2022-07-12 10:26:09,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.77777777777777) internal successors, (916), 9 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:09,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:09,946 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:09,946 INFO L186 Difference]: Start difference. First operand has 333 places, 436 transitions, 12489 flow. Second operand 9 states and 916 transitions. [2022-07-12 10:26:09,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 456 transitions, 12626 flow [2022-07-12 10:26:10,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 456 transitions, 12439 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-07-12 10:26:10,235 INFO L242 Difference]: Finished difference. Result has 344 places, 324 transitions, 8284 flow [2022-07-12 10:26:10,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12302, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8284, PETRI_PLACES=344, PETRI_TRANSITIONS=324} [2022-07-12 10:26:10,236 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 232 predicate places. [2022-07-12 10:26:10,236 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 324 transitions, 8284 flow [2022-07-12 10:26:10,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:10,236 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:10,236 INFO L200 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] [2022-07-12 10:26:10,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-12 10:26:10,236 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:10,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:10,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1042991530, now seen corresponding path program 1 times [2022-07-12 10:26:10,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:10,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981171354] [2022-07-12 10:26:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:10,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:10,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:10,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981171354] [2022-07-12 10:26:10,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981171354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:10,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:10,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:10,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935090982] [2022-07-12 10:26:10,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:10,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:10,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:10,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:10,317 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:10,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 324 transitions, 8284 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:10,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:10,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:10,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:12,192 INFO L129 PetriNetUnfolder]: 3297/9024 cut-off events. [2022-07-12 10:26:12,192 INFO L130 PetriNetUnfolder]: For 37995/43298 co-relation queries the response was YES. [2022-07-12 10:26:12,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24673 conditions, 9024 events. 3297/9024 cut-off events. For 37995/43298 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 102334 event pairs, 2389 based on Foata normal form. 8/8456 useless extension candidates. Maximal degree in co-relation 24569. Up to 5778 conditions per place. [2022-07-12 10:26:12,322 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 68 selfloop transitions, 24 changer transitions 16/392 dead transitions. [2022-07-12 10:26:12,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 392 transitions, 8737 flow [2022-07-12 10:26:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:26:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:26:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1519 transitions. [2022-07-12 10:26:12,324 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.765625 [2022-07-12 10:26:12,324 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1519 transitions. [2022-07-12 10:26:12,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1519 transitions. [2022-07-12 10:26:12,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:12,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1519 transitions. [2022-07-12 10:26:12,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.9375) internal successors, (1519), 16 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:12,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:12,327 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:12,327 INFO L186 Difference]: Start difference. First operand has 344 places, 324 transitions, 8284 flow. Second operand 16 states and 1519 transitions. [2022-07-12 10:26:12,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 392 transitions, 8737 flow [2022-07-12 10:26:12,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 392 transitions, 8102 flow, removed 97 selfloop flow, removed 26 redundant places. [2022-07-12 10:26:12,470 INFO L242 Difference]: Finished difference. Result has 332 places, 348 transitions, 7863 flow [2022-07-12 10:26:12,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7655, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7863, PETRI_PLACES=332, PETRI_TRANSITIONS=348} [2022-07-12 10:26:12,470 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 220 predicate places. [2022-07-12 10:26:12,471 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 348 transitions, 7863 flow [2022-07-12 10:26:12,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:12,471 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:12,471 INFO L200 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] [2022-07-12 10:26:12,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-12 10:26:12,472 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:12,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1682294116, now seen corresponding path program 1 times [2022-07-12 10:26:12,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:12,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980203936] [2022-07-12 10:26:12,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:12,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:12,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:12,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980203936] [2022-07-12 10:26:12,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980203936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:12,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:12,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:26:12,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025817043] [2022-07-12 10:26:12,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:12,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:26:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:26:12,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:26:12,517 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-12 10:26:12,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 348 transitions, 7863 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:12,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:12,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-12 10:26:12,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:13,024 INFO L129 PetriNetUnfolder]: 349/2843 cut-off events. [2022-07-12 10:26:13,025 INFO L130 PetriNetUnfolder]: For 29788/34746 co-relation queries the response was YES. [2022-07-12 10:26:13,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9954 conditions, 2843 events. 349/2843 cut-off events. For 29788/34746 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 32281 event pairs, 62 based on Foata normal form. 85/2817 useless extension candidates. Maximal degree in co-relation 9855. Up to 284 conditions per place. [2022-07-12 10:26:13,060 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 19 selfloop transitions, 0 changer transitions 169/367 dead transitions. [2022-07-12 10:26:13,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 367 transitions, 7994 flow [2022-07-12 10:26:13,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:26:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:26:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 914 transitions. [2022-07-12 10:26:13,061 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8189964157706093 [2022-07-12 10:26:13,061 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 914 transitions. [2022-07-12 10:26:13,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 914 transitions. [2022-07-12 10:26:13,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:13,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 914 transitions. [2022-07-12 10:26:13,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.55555555555556) internal successors, (914), 9 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,063 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,063 INFO L186 Difference]: Start difference. First operand has 332 places, 348 transitions, 7863 flow. Second operand 9 states and 914 transitions. [2022-07-12 10:26:13,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 367 transitions, 7994 flow [2022-07-12 10:26:13,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 367 transitions, 7944 flow, removed 25 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:13,183 INFO L242 Difference]: Finished difference. Result has 342 places, 198 transitions, 3104 flow [2022-07-12 10:26:13,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7813, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3104, PETRI_PLACES=342, PETRI_TRANSITIONS=198} [2022-07-12 10:26:13,184 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 230 predicate places. [2022-07-12 10:26:13,184 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 198 transitions, 3104 flow [2022-07-12 10:26:13,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,184 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:13,184 INFO L200 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] [2022-07-12 10:26:13,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-12 10:26:13,184 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:13,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:13,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1324255288, now seen corresponding path program 2 times [2022-07-12 10:26:13,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:13,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634255450] [2022-07-12 10:26:13,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:13,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:13,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634255450] [2022-07-12 10:26:13,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634255450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:13,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:13,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:13,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519718034] [2022-07-12 10:26:13,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:13,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:13,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:13,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:13,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:13,271 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:13,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 198 transitions, 3104 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:13,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:13,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:13,918 INFO L129 PetriNetUnfolder]: 1205/3227 cut-off events. [2022-07-12 10:26:13,918 INFO L130 PetriNetUnfolder]: For 10461/10779 co-relation queries the response was YES. [2022-07-12 10:26:13,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10610 conditions, 3227 events. 1205/3227 cut-off events. For 10461/10779 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 29900 event pairs, 425 based on Foata normal form. 3/3112 useless extension candidates. Maximal degree in co-relation 10506. Up to 1139 conditions per place. [2022-07-12 10:26:13,964 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 82 selfloop transitions, 31 changer transitions 16/273 dead transitions. [2022-07-12 10:26:13,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 273 transitions, 3748 flow [2022-07-12 10:26:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:26:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:26:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-07-12 10:26:13,966 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-07-12 10:26:13,966 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-07-12 10:26:13,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-07-12 10:26:13,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:13,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-07-12 10:26:13,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,971 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,971 INFO L186 Difference]: Start difference. First operand has 342 places, 198 transitions, 3104 flow. Second operand 17 states and 1610 transitions. [2022-07-12 10:26:13,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 273 transitions, 3748 flow [2022-07-12 10:26:14,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 273 transitions, 2872 flow, removed 110 selfloop flow, removed 63 redundant places. [2022-07-12 10:26:14,017 INFO L242 Difference]: Finished difference. Result has 264 places, 226 transitions, 2568 flow [2022-07-12 10:26:14,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2568, PETRI_PLACES=264, PETRI_TRANSITIONS=226} [2022-07-12 10:26:14,018 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 152 predicate places. [2022-07-12 10:26:14,018 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 226 transitions, 2568 flow [2022-07-12 10:26:14,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:14,018 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:14,018 INFO L200 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] [2022-07-12 10:26:14,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-12 10:26:14,019 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:14,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:14,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1840800024, now seen corresponding path program 3 times [2022-07-12 10:26:14,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:14,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019501328] [2022-07-12 10:26:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:14,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:14,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:14,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019501328] [2022-07-12 10:26:14,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019501328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:14,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:14,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:14,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846197370] [2022-07-12 10:26:14,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:14,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:14,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:14,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:14,110 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:14,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 226 transitions, 2568 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:14,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:14,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:14,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:14,769 INFO L129 PetriNetUnfolder]: 1318/3586 cut-off events. [2022-07-12 10:26:14,769 INFO L130 PetriNetUnfolder]: For 9826/10021 co-relation queries the response was YES. [2022-07-12 10:26:14,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13110 conditions, 3586 events. 1318/3586 cut-off events. For 9826/10021 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 34540 event pairs, 319 based on Foata normal form. 13/3497 useless extension candidates. Maximal degree in co-relation 13042. Up to 821 conditions per place. [2022-07-12 10:26:14,811 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 112 selfloop transitions, 50 changer transitions 28/334 dead transitions. [2022-07-12 10:26:14,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 334 transitions, 3626 flow [2022-07-12 10:26:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:26:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:26:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2264 transitions. [2022-07-12 10:26:14,813 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-07-12 10:26:14,813 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2264 transitions. [2022-07-12 10:26:14,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2264 transitions. [2022-07-12 10:26:14,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:14,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2264 transitions. [2022-07-12 10:26:14,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.33333333333333) internal successors, (2264), 24 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:14,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:14,819 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:14,819 INFO L186 Difference]: Start difference. First operand has 264 places, 226 transitions, 2568 flow. Second operand 24 states and 2264 transitions. [2022-07-12 10:26:14,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 334 transitions, 3626 flow [2022-07-12 10:26:14,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 334 transitions, 3526 flow, removed 43 selfloop flow, removed 4 redundant places. [2022-07-12 10:26:14,881 INFO L242 Difference]: Finished difference. Result has 301 places, 255 transitions, 2981 flow [2022-07-12 10:26:14,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2981, PETRI_PLACES=301, PETRI_TRANSITIONS=255} [2022-07-12 10:26:14,882 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 189 predicate places. [2022-07-12 10:26:14,882 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 255 transitions, 2981 flow [2022-07-12 10:26:14,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:14,882 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:14,882 INFO L200 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] [2022-07-12 10:26:14,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-12 10:26:14,883 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:14,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:14,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1467293538, now seen corresponding path program 1 times [2022-07-12 10:26:14,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:14,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830912996] [2022-07-12 10:26:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:14,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:14,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:14,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830912996] [2022-07-12 10:26:14,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830912996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:14,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:14,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:14,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464753912] [2022-07-12 10:26:14,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:14,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:14,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:14,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:14,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:14,967 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:14,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 255 transitions, 2981 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:14,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:14,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:14,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:15,821 INFO L129 PetriNetUnfolder]: 1424/3893 cut-off events. [2022-07-12 10:26:15,821 INFO L130 PetriNetUnfolder]: For 15725/15919 co-relation queries the response was YES. [2022-07-12 10:26:15,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15864 conditions, 3893 events. 1424/3893 cut-off events. For 15725/15919 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 38061 event pairs, 497 based on Foata normal form. 5/3787 useless extension candidates. Maximal degree in co-relation 15779. Up to 2035 conditions per place. [2022-07-12 10:26:15,871 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 146 selfloop transitions, 31 changer transitions 28/349 dead transitions. [2022-07-12 10:26:15,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 349 transitions, 3764 flow [2022-07-12 10:26:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:26:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:26:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2264 transitions. [2022-07-12 10:26:15,873 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-07-12 10:26:15,873 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2264 transitions. [2022-07-12 10:26:15,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2264 transitions. [2022-07-12 10:26:15,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:15,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2264 transitions. [2022-07-12 10:26:15,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.33333333333333) internal successors, (2264), 24 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:15,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:15,880 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:15,880 INFO L186 Difference]: Start difference. First operand has 301 places, 255 transitions, 2981 flow. Second operand 24 states and 2264 transitions. [2022-07-12 10:26:15,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 349 transitions, 3764 flow [2022-07-12 10:26:16,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 349 transitions, 3612 flow, removed 76 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:16,030 INFO L242 Difference]: Finished difference. Result has 338 places, 280 transitions, 3124 flow [2022-07-12 10:26:16,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2875, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3124, PETRI_PLACES=338, PETRI_TRANSITIONS=280} [2022-07-12 10:26:16,031 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 226 predicate places. [2022-07-12 10:26:16,031 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 280 transitions, 3124 flow [2022-07-12 10:26:16,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:16,031 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:16,032 INFO L200 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] [2022-07-12 10:26:16,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-12 10:26:16,032 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:16,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2060971002, now seen corresponding path program 2 times [2022-07-12 10:26:16,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:16,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331087107] [2022-07-12 10:26:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:16,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:16,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:16,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331087107] [2022-07-12 10:26:16,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331087107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:16,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:16,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220496899] [2022-07-12 10:26:16,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:16,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:16,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:16,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:16,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:16,123 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:16,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 280 transitions, 3124 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:16,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:16,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:16,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:16,983 INFO L129 PetriNetUnfolder]: 1702/4499 cut-off events. [2022-07-12 10:26:16,983 INFO L130 PetriNetUnfolder]: For 17860/18055 co-relation queries the response was YES. [2022-07-12 10:26:17,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18845 conditions, 4499 events. 1702/4499 cut-off events. For 17860/18055 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 45208 event pairs, 573 based on Foata normal form. 3/4362 useless extension candidates. Maximal degree in co-relation 18743. Up to 2338 conditions per place. [2022-07-12 10:26:17,050 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 148 selfloop transitions, 41 changer transitions 16/349 dead transitions. [2022-07-12 10:26:17,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 349 transitions, 4008 flow [2022-07-12 10:26:17,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:26:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:26:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-07-12 10:26:17,052 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-07-12 10:26:17,052 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-07-12 10:26:17,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-07-12 10:26:17,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:17,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-07-12 10:26:17,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:17,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:17,055 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:17,055 INFO L186 Difference]: Start difference. First operand has 338 places, 280 transitions, 3124 flow. Second operand 17 states and 1610 transitions. [2022-07-12 10:26:17,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 349 transitions, 4008 flow [2022-07-12 10:26:17,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 349 transitions, 3766 flow, removed 56 selfloop flow, removed 10 redundant places. [2022-07-12 10:26:17,172 INFO L242 Difference]: Finished difference. Result has 354 places, 307 transitions, 3354 flow [2022-07-12 10:26:17,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2962, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3354, PETRI_PLACES=354, PETRI_TRANSITIONS=307} [2022-07-12 10:26:17,173 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 242 predicate places. [2022-07-12 10:26:17,173 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 307 transitions, 3354 flow [2022-07-12 10:26:17,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:17,174 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:17,174 INFO L200 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] [2022-07-12 10:26:17,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-12 10:26:17,174 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:17,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:17,174 INFO L85 PathProgramCache]: Analyzing trace with hash -820194130, now seen corresponding path program 3 times [2022-07-12 10:26:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:17,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777919166] [2022-07-12 10:26:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:17,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:17,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777919166] [2022-07-12 10:26:17,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777919166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:17,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:17,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:17,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093478103] [2022-07-12 10:26:17,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:17,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:17,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:17,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:17,260 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:17,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 307 transitions, 3354 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:17,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:17,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:17,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:18,220 INFO L129 PetriNetUnfolder]: 1844/4856 cut-off events. [2022-07-12 10:26:18,220 INFO L130 PetriNetUnfolder]: For 19882/20090 co-relation queries the response was YES. [2022-07-12 10:26:18,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20251 conditions, 4856 events. 1844/4856 cut-off events. For 19882/20090 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 49018 event pairs, 555 based on Foata normal form. 3/4723 useless extension candidates. Maximal degree in co-relation 20142. Up to 2366 conditions per place. [2022-07-12 10:26:18,291 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 162 selfloop transitions, 49 changer transitions 16/371 dead transitions. [2022-07-12 10:26:18,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 371 transitions, 4227 flow [2022-07-12 10:26:18,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:26:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:26:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1517 transitions. [2022-07-12 10:26:18,293 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764616935483871 [2022-07-12 10:26:18,293 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1517 transitions. [2022-07-12 10:26:18,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1517 transitions. [2022-07-12 10:26:18,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:18,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1517 transitions. [2022-07-12 10:26:18,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.8125) internal successors, (1517), 16 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:18,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:18,298 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:18,298 INFO L186 Difference]: Start difference. First operand has 354 places, 307 transitions, 3354 flow. Second operand 16 states and 1517 transitions. [2022-07-12 10:26:18,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 371 transitions, 4227 flow [2022-07-12 10:26:18,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 371 transitions, 4057 flow, removed 85 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:18,472 INFO L242 Difference]: Finished difference. Result has 375 places, 327 transitions, 3569 flow [2022-07-12 10:26:18,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3230, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3569, PETRI_PLACES=375, PETRI_TRANSITIONS=327} [2022-07-12 10:26:18,473 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 263 predicate places. [2022-07-12 10:26:18,473 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 327 transitions, 3569 flow [2022-07-12 10:26:18,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:18,474 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:18,474 INFO L200 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] [2022-07-12 10:26:18,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-12 10:26:18,474 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:18,474 INFO L85 PathProgramCache]: Analyzing trace with hash -629497636, now seen corresponding path program 4 times [2022-07-12 10:26:18,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:18,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330000752] [2022-07-12 10:26:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:18,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:18,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:18,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330000752] [2022-07-12 10:26:18,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330000752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:18,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:18,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:18,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919108656] [2022-07-12 10:26:18,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:18,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:18,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:18,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:18,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:18,552 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:18,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 327 transitions, 3569 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:18,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:18,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:18,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:19,600 INFO L129 PetriNetUnfolder]: 1942/5241 cut-off events. [2022-07-12 10:26:19,600 INFO L130 PetriNetUnfolder]: For 21496/21703 co-relation queries the response was YES. [2022-07-12 10:26:19,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22178 conditions, 5241 events. 1942/5241 cut-off events. For 21496/21703 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 54655 event pairs, 515 based on Foata normal form. 3/5112 useless extension candidates. Maximal degree in co-relation 22060. Up to 2097 conditions per place. [2022-07-12 10:26:19,673 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 182 selfloop transitions, 74 changer transitions 26/426 dead transitions. [2022-07-12 10:26:19,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 426 transitions, 4815 flow [2022-07-12 10:26:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:26:19,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:26:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2261 transitions. [2022-07-12 10:26:19,676 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.759744623655914 [2022-07-12 10:26:19,676 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2261 transitions. [2022-07-12 10:26:19,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2261 transitions. [2022-07-12 10:26:19,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:19,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2261 transitions. [2022-07-12 10:26:19,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.20833333333333) internal successors, (2261), 24 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:19,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:19,680 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:19,681 INFO L186 Difference]: Start difference. First operand has 375 places, 327 transitions, 3569 flow. Second operand 24 states and 2261 transitions. [2022-07-12 10:26:19,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 426 transitions, 4815 flow [2022-07-12 10:26:19,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 426 transitions, 4552 flow, removed 101 selfloop flow, removed 5 redundant places. [2022-07-12 10:26:19,850 INFO L242 Difference]: Finished difference. Result has 410 places, 353 transitions, 3903 flow [2022-07-12 10:26:19,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3383, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3903, PETRI_PLACES=410, PETRI_TRANSITIONS=353} [2022-07-12 10:26:19,850 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 298 predicate places. [2022-07-12 10:26:19,850 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 353 transitions, 3903 flow [2022-07-12 10:26:19,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:19,850 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:19,851 INFO L200 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] [2022-07-12 10:26:19,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-12 10:26:19,851 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:19,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:19,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1958380388, now seen corresponding path program 5 times [2022-07-12 10:26:19,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:19,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417206241] [2022-07-12 10:26:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:19,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:19,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:19,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417206241] [2022-07-12 10:26:19,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417206241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:19,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:19,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:19,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868859928] [2022-07-12 10:26:19,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:19,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:19,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:19,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:19,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:19,924 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:19,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 353 transitions, 3903 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:19,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:19,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:19,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:21,165 INFO L129 PetriNetUnfolder]: 2174/5876 cut-off events. [2022-07-12 10:26:21,165 INFO L130 PetriNetUnfolder]: For 30355/30596 co-relation queries the response was YES. [2022-07-12 10:26:21,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26213 conditions, 5876 events. 2174/5876 cut-off events. For 30355/30596 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 62203 event pairs, 595 based on Foata normal form. 25/5751 useless extension candidates. Maximal degree in co-relation 26080. Up to 2617 conditions per place. [2022-07-12 10:26:21,255 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 199 selfloop transitions, 73 changer transitions 24/440 dead transitions. [2022-07-12 10:26:21,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 440 transitions, 5385 flow [2022-07-12 10:26:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:26:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:26:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2071 transitions. [2022-07-12 10:26:21,257 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7591642228739003 [2022-07-12 10:26:21,258 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2071 transitions. [2022-07-12 10:26:21,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2071 transitions. [2022-07-12 10:26:21,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:21,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2071 transitions. [2022-07-12 10:26:21,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.13636363636364) internal successors, (2071), 22 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,263 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,263 INFO L186 Difference]: Start difference. First operand has 410 places, 353 transitions, 3903 flow. Second operand 22 states and 2071 transitions. [2022-07-12 10:26:21,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 440 transitions, 5385 flow [2022-07-12 10:26:21,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 440 transitions, 5299 flow, removed 40 selfloop flow, removed 3 redundant places. [2022-07-12 10:26:21,466 INFO L242 Difference]: Finished difference. Result has 441 places, 384 transitions, 4515 flow [2022-07-12 10:26:21,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3820, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4515, PETRI_PLACES=441, PETRI_TRANSITIONS=384} [2022-07-12 10:26:21,466 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 329 predicate places. [2022-07-12 10:26:21,467 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 384 transitions, 4515 flow [2022-07-12 10:26:21,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,467 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:21,467 INFO L200 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] [2022-07-12 10:26:21,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-12 10:26:21,467 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:21,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1601681310, now seen corresponding path program 6 times [2022-07-12 10:26:21,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:21,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709296108] [2022-07-12 10:26:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:21,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:21,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:21,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709296108] [2022-07-12 10:26:21,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709296108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:21,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:21,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:21,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130162751] [2022-07-12 10:26:21,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:21,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:21,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:21,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:21,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:21,550 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:21,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 384 transitions, 4515 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:21,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:21,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:23,138 INFO L129 PetriNetUnfolder]: 2260/6252 cut-off events. [2022-07-12 10:26:23,139 INFO L130 PetriNetUnfolder]: For 43354/43583 co-relation queries the response was YES. [2022-07-12 10:26:23,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29793 conditions, 6252 events. 2260/6252 cut-off events. For 43354/43583 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 67626 event pairs, 674 based on Foata normal form. 5/6098 useless extension candidates. Maximal degree in co-relation 29647. Up to 2680 conditions per place. [2022-07-12 10:26:23,223 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 218 selfloop transitions, 74 changer transitions 23/459 dead transitions. [2022-07-12 10:26:23,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 459 transitions, 6042 flow [2022-07-12 10:26:23,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:26:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:26:23,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1982 transitions. [2022-07-12 10:26:23,225 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.761136712749616 [2022-07-12 10:26:23,225 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1982 transitions. [2022-07-12 10:26:23,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1982 transitions. [2022-07-12 10:26:23,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:23,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1982 transitions. [2022-07-12 10:26:23,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.38095238095238) internal successors, (1982), 21 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:23,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:23,230 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:23,230 INFO L186 Difference]: Start difference. First operand has 441 places, 384 transitions, 4515 flow. Second operand 21 states and 1982 transitions. [2022-07-12 10:26:23,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 459 transitions, 6042 flow [2022-07-12 10:26:23,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 459 transitions, 5809 flow, removed 103 selfloop flow, removed 3 redundant places. [2022-07-12 10:26:23,494 INFO L242 Difference]: Finished difference. Result has 471 places, 412 transitions, 5041 flow [2022-07-12 10:26:23,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4300, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5041, PETRI_PLACES=471, PETRI_TRANSITIONS=412} [2022-07-12 10:26:23,495 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 359 predicate places. [2022-07-12 10:26:23,495 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 412 transitions, 5041 flow [2022-07-12 10:26:23,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:23,496 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:23,496 INFO L200 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] [2022-07-12 10:26:23,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-12 10:26:23,496 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:23,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:23,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1046108190, now seen corresponding path program 7 times [2022-07-12 10:26:23,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:23,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611106492] [2022-07-12 10:26:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:23,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:23,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611106492] [2022-07-12 10:26:23,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611106492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:23,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:23,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:23,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581972444] [2022-07-12 10:26:23,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:23,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:23,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:23,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:23,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:23,575 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:23,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 412 transitions, 5041 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:23,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:23,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:23,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:25,039 INFO L129 PetriNetUnfolder]: 2333/6496 cut-off events. [2022-07-12 10:26:25,039 INFO L130 PetriNetUnfolder]: For 54738/54966 co-relation queries the response was YES. [2022-07-12 10:26:25,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32199 conditions, 6496 events. 2333/6496 cut-off events. For 54738/54966 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 71310 event pairs, 624 based on Foata normal form. 4/6347 useless extension candidates. Maximal degree in co-relation 32040. Up to 2671 conditions per place. [2022-07-12 10:26:25,155 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 238 selfloop transitions, 82 changer transitions 22/486 dead transitions. [2022-07-12 10:26:25,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 486 transitions, 6663 flow [2022-07-12 10:26:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:26:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:26:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1889 transitions. [2022-07-12 10:26:25,157 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7616935483870968 [2022-07-12 10:26:25,157 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1889 transitions. [2022-07-12 10:26:25,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1889 transitions. [2022-07-12 10:26:25,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:25,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1889 transitions. [2022-07-12 10:26:25,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.45) internal successors, (1889), 20 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:25,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:25,162 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:25,162 INFO L186 Difference]: Start difference. First operand has 471 places, 412 transitions, 5041 flow. Second operand 20 states and 1889 transitions. [2022-07-12 10:26:25,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 486 transitions, 6663 flow [2022-07-12 10:26:25,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 486 transitions, 6381 flow, removed 126 selfloop flow, removed 3 redundant places. [2022-07-12 10:26:25,539 INFO L242 Difference]: Finished difference. Result has 500 places, 445 transitions, 5712 flow [2022-07-12 10:26:25,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4781, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5712, PETRI_PLACES=500, PETRI_TRANSITIONS=445} [2022-07-12 10:26:25,540 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 388 predicate places. [2022-07-12 10:26:25,540 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 445 transitions, 5712 flow [2022-07-12 10:26:25,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:25,540 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:25,541 INFO L200 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] [2022-07-12 10:26:25,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-12 10:26:25,541 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:25,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:25,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1815561746, now seen corresponding path program 8 times [2022-07-12 10:26:25,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:25,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039963155] [2022-07-12 10:26:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:25,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:25,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:25,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039963155] [2022-07-12 10:26:25,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039963155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:25,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:25,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485381496] [2022-07-12 10:26:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:25,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:25,619 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:25,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 445 transitions, 5712 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:25,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:25,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:25,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:27,274 INFO L129 PetriNetUnfolder]: 2391/6807 cut-off events. [2022-07-12 10:26:27,275 INFO L130 PetriNetUnfolder]: For 59476/59724 co-relation queries the response was YES. [2022-07-12 10:26:27,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33963 conditions, 6807 events. 2391/6807 cut-off events. For 59476/59724 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 75984 event pairs, 606 based on Foata normal form. 15/6671 useless extension candidates. Maximal degree in co-relation 33791. Up to 3000 conditions per place. [2022-07-12 10:26:27,382 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 237 selfloop transitions, 105 changer transitions 14/500 dead transitions. [2022-07-12 10:26:27,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 500 transitions, 7107 flow [2022-07-12 10:26:27,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:26:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:26:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1514 transitions. [2022-07-12 10:26:27,383 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631048387096774 [2022-07-12 10:26:27,383 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1514 transitions. [2022-07-12 10:26:27,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1514 transitions. [2022-07-12 10:26:27,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:27,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1514 transitions. [2022-07-12 10:26:27,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.625) internal successors, (1514), 16 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:27,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:27,387 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:27,387 INFO L186 Difference]: Start difference. First operand has 500 places, 445 transitions, 5712 flow. Second operand 16 states and 1514 transitions. [2022-07-12 10:26:27,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 500 transitions, 7107 flow [2022-07-12 10:26:27,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 500 transitions, 6729 flow, removed 189 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:27,820 INFO L242 Difference]: Finished difference. Result has 519 places, 463 transitions, 5914 flow [2022-07-12 10:26:27,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5362, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5914, PETRI_PLACES=519, PETRI_TRANSITIONS=463} [2022-07-12 10:26:27,821 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 407 predicate places. [2022-07-12 10:26:27,821 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 463 transitions, 5914 flow [2022-07-12 10:26:27,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:27,822 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:27,822 INFO L200 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] [2022-07-12 10:26:27,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-12 10:26:27,822 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:27,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:27,822 INFO L85 PathProgramCache]: Analyzing trace with hash -363943892, now seen corresponding path program 9 times [2022-07-12 10:26:27,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:27,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907211921] [2022-07-12 10:26:27,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:27,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:27,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:27,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907211921] [2022-07-12 10:26:27,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907211921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:27,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:27,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:27,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116092968] [2022-07-12 10:26:27,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:27,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:27,898 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:27,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 463 transitions, 5914 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:27,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:27,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:27,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:29,658 INFO L129 PetriNetUnfolder]: 2482/6997 cut-off events. [2022-07-12 10:26:29,658 INFO L130 PetriNetUnfolder]: For 54979/55228 co-relation queries the response was YES. [2022-07-12 10:26:29,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35041 conditions, 6997 events. 2482/6997 cut-off events. For 54979/55228 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 78102 event pairs, 652 based on Foata normal form. 5/6830 useless extension candidates. Maximal degree in co-relation 34862. Up to 3071 conditions per place. [2022-07-12 10:26:29,793 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 247 selfloop transitions, 119 changer transitions 19/529 dead transitions. [2022-07-12 10:26:29,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 529 transitions, 7417 flow [2022-07-12 10:26:29,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:26:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:26:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1885 transitions. [2022-07-12 10:26:29,795 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-07-12 10:26:29,795 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1885 transitions. [2022-07-12 10:26:29,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1885 transitions. [2022-07-12 10:26:29,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:29,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1885 transitions. [2022-07-12 10:26:29,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.25) internal successors, (1885), 20 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:29,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:29,799 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:29,799 INFO L186 Difference]: Start difference. First operand has 519 places, 463 transitions, 5914 flow. Second operand 20 states and 1885 transitions. [2022-07-12 10:26:29,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 529 transitions, 7417 flow [2022-07-12 10:26:30,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 529 transitions, 7260 flow, removed 55 selfloop flow, removed 3 redundant places. [2022-07-12 10:26:30,231 INFO L242 Difference]: Finished difference. Result has 546 places, 489 transitions, 6586 flow [2022-07-12 10:26:30,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5776, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6586, PETRI_PLACES=546, PETRI_TRANSITIONS=489} [2022-07-12 10:26:30,232 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 434 predicate places. [2022-07-12 10:26:30,232 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 489 transitions, 6586 flow [2022-07-12 10:26:30,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:30,232 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:30,232 INFO L200 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] [2022-07-12 10:26:30,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-12 10:26:30,232 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:30,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:30,233 INFO L85 PathProgramCache]: Analyzing trace with hash 164438094, now seen corresponding path program 10 times [2022-07-12 10:26:30,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:30,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937632521] [2022-07-12 10:26:30,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:30,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:30,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:30,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937632521] [2022-07-12 10:26:30,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937632521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:30,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:30,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:30,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267983853] [2022-07-12 10:26:30,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:30,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:30,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:30,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:30,311 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:30,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 489 transitions, 6586 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:30,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:30,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:30,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:32,165 INFO L129 PetriNetUnfolder]: 2492/7133 cut-off events. [2022-07-12 10:26:32,165 INFO L130 PetriNetUnfolder]: For 59062/59372 co-relation queries the response was YES. [2022-07-12 10:26:32,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36503 conditions, 7133 events. 2492/7133 cut-off events. For 59062/59372 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 79847 event pairs, 633 based on Foata normal form. 32/7009 useless extension candidates. Maximal degree in co-relation 36313. Up to 3063 conditions per place. [2022-07-12 10:26:32,295 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 246 selfloop transitions, 124 changer transitions 24/538 dead transitions. [2022-07-12 10:26:32,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 538 transitions, 8029 flow [2022-07-12 10:26:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:26:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:26:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1699 transitions. [2022-07-12 10:26:32,297 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7612007168458781 [2022-07-12 10:26:32,297 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1699 transitions. [2022-07-12 10:26:32,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1699 transitions. [2022-07-12 10:26:32,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:32,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1699 transitions. [2022-07-12 10:26:32,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.38888888888889) internal successors, (1699), 18 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,301 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,301 INFO L186 Difference]: Start difference. First operand has 546 places, 489 transitions, 6586 flow. Second operand 18 states and 1699 transitions. [2022-07-12 10:26:32,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 538 transitions, 8029 flow [2022-07-12 10:26:32,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 538 transitions, 7825 flow, removed 78 selfloop flow, removed 3 redundant places. [2022-07-12 10:26:32,773 INFO L242 Difference]: Finished difference. Result has 565 places, 498 transitions, 6960 flow [2022-07-12 10:26:32,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6465, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6960, PETRI_PLACES=565, PETRI_TRANSITIONS=498} [2022-07-12 10:26:32,774 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 453 predicate places. [2022-07-12 10:26:32,774 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 498 transitions, 6960 flow [2022-07-12 10:26:32,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,774 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:32,774 INFO L200 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] [2022-07-12 10:26:32,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-12 10:26:32,775 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:32,775 INFO L85 PathProgramCache]: Analyzing trace with hash -579980082, now seen corresponding path program 11 times [2022-07-12 10:26:32,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:32,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771608227] [2022-07-12 10:26:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:32,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:32,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:32,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771608227] [2022-07-12 10:26:32,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771608227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:32,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:32,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:32,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108733046] [2022-07-12 10:26:32,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:32,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:32,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:32,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:32,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:32,859 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:32,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 498 transitions, 6960 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:32,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:32,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:35,055 INFO L129 PetriNetUnfolder]: 2529/7270 cut-off events. [2022-07-12 10:26:35,055 INFO L130 PetriNetUnfolder]: For 58821/59069 co-relation queries the response was YES. [2022-07-12 10:26:35,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37785 conditions, 7270 events. 2529/7270 cut-off events. For 58821/59069 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 82052 event pairs, 649 based on Foata normal form. 9/7124 useless extension candidates. Maximal degree in co-relation 37590. Up to 3124 conditions per place. [2022-07-12 10:26:35,173 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 281 selfloop transitions, 109 changer transitions 17/551 dead transitions. [2022-07-12 10:26:35,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 551 transitions, 8474 flow [2022-07-12 10:26:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:26:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:26:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1704 transitions. [2022-07-12 10:26:35,175 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2022-07-12 10:26:35,175 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1704 transitions. [2022-07-12 10:26:35,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1704 transitions. [2022-07-12 10:26:35,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:35,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1704 transitions. [2022-07-12 10:26:35,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.66666666666667) internal successors, (1704), 18 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:35,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:35,179 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:35,179 INFO L186 Difference]: Start difference. First operand has 565 places, 498 transitions, 6960 flow. Second operand 18 states and 1704 transitions. [2022-07-12 10:26:35,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 551 transitions, 8474 flow [2022-07-12 10:26:35,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 551 transitions, 8278 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-07-12 10:26:35,644 INFO L242 Difference]: Finished difference. Result has 580 places, 518 transitions, 7515 flow [2022-07-12 10:26:35,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6774, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7515, PETRI_PLACES=580, PETRI_TRANSITIONS=518} [2022-07-12 10:26:35,644 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 468 predicate places. [2022-07-12 10:26:35,644 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 518 transitions, 7515 flow [2022-07-12 10:26:35,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:35,645 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:35,645 INFO L200 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] [2022-07-12 10:26:35,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-12 10:26:35,645 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:35,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:35,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2115569696, now seen corresponding path program 12 times [2022-07-12 10:26:35,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:35,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259597802] [2022-07-12 10:26:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:35,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:35,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:35,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259597802] [2022-07-12 10:26:35,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259597802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:35,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:35,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:35,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518193189] [2022-07-12 10:26:35,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:35,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:35,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:35,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:35,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:35,723 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:35,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 518 transitions, 7515 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:35,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:35,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:35,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:37,758 INFO L129 PetriNetUnfolder]: 2573/7583 cut-off events. [2022-07-12 10:26:37,758 INFO L130 PetriNetUnfolder]: For 59701/59950 co-relation queries the response was YES. [2022-07-12 10:26:37,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39362 conditions, 7583 events. 2573/7583 cut-off events. For 59701/59950 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 87365 event pairs, 667 based on Foata normal form. 5/7419 useless extension candidates. Maximal degree in co-relation 39164. Up to 3200 conditions per place. [2022-07-12 10:26:37,910 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 263 selfloop transitions, 133 changer transitions 20/560 dead transitions. [2022-07-12 10:26:37,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 560 transitions, 8788 flow [2022-07-12 10:26:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:26:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:26:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1700 transitions. [2022-07-12 10:26:37,912 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7616487455197133 [2022-07-12 10:26:37,913 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1700 transitions. [2022-07-12 10:26:37,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1700 transitions. [2022-07-12 10:26:37,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:37,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1700 transitions. [2022-07-12 10:26:37,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.44444444444444) internal successors, (1700), 18 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:37,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:37,917 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:37,917 INFO L186 Difference]: Start difference. First operand has 580 places, 518 transitions, 7515 flow. Second operand 18 states and 1700 transitions. [2022-07-12 10:26:37,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 560 transitions, 8788 flow [2022-07-12 10:26:38,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 560 transitions, 8567 flow, removed 103 selfloop flow, removed 6 redundant places. [2022-07-12 10:26:38,487 INFO L242 Difference]: Finished difference. Result has 595 places, 531 transitions, 7854 flow [2022-07-12 10:26:38,487 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7296, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7854, PETRI_PLACES=595, PETRI_TRANSITIONS=531} [2022-07-12 10:26:38,488 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 483 predicate places. [2022-07-12 10:26:38,488 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 531 transitions, 7854 flow [2022-07-12 10:26:38,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:38,488 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:38,488 INFO L200 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] [2022-07-12 10:26:38,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-12 10:26:38,488 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:38,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:38,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1418596208, now seen corresponding path program 13 times [2022-07-12 10:26:38,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:38,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080803165] [2022-07-12 10:26:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:38,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:38,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080803165] [2022-07-12 10:26:38,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080803165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:38,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:38,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:38,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920975122] [2022-07-12 10:26:38,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:38,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:38,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:38,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:38,568 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:38,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 531 transitions, 7854 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:38,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:38,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:38,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:40,707 INFO L129 PetriNetUnfolder]: 2565/7471 cut-off events. [2022-07-12 10:26:40,707 INFO L130 PetriNetUnfolder]: For 57002/57250 co-relation queries the response was YES. [2022-07-12 10:26:40,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39562 conditions, 7471 events. 2565/7471 cut-off events. For 57002/57250 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 85530 event pairs, 665 based on Foata normal form. 9/7323 useless extension candidates. Maximal degree in co-relation 39363. Up to 3215 conditions per place. [2022-07-12 10:26:40,848 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 280 selfloop transitions, 119 changer transitions 21/564 dead transitions. [2022-07-12 10:26:40,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 564 transitions, 8979 flow [2022-07-12 10:26:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:26:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:26:40,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-07-12 10:26:40,849 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-07-12 10:26:40,849 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-07-12 10:26:40,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-07-12 10:26:40,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:40,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-07-12 10:26:40,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:40,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:40,852 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:40,852 INFO L186 Difference]: Start difference. First operand has 595 places, 531 transitions, 7854 flow. Second operand 17 states and 1610 transitions. [2022-07-12 10:26:40,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 564 transitions, 8979 flow [2022-07-12 10:26:41,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 564 transitions, 8852 flow, removed 34 selfloop flow, removed 5 redundant places. [2022-07-12 10:26:41,405 INFO L242 Difference]: Finished difference. Result has 609 places, 537 transitions, 8107 flow [2022-07-12 10:26:41,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7733, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8107, PETRI_PLACES=609, PETRI_TRANSITIONS=537} [2022-07-12 10:26:41,406 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 497 predicate places. [2022-07-12 10:26:41,406 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 537 transitions, 8107 flow [2022-07-12 10:26:41,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:41,406 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:41,406 INFO L200 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] [2022-07-12 10:26:41,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-12 10:26:41,407 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash -5158680, now seen corresponding path program 14 times [2022-07-12 10:26:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:41,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957353205] [2022-07-12 10:26:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:41,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:41,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:41,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957353205] [2022-07-12 10:26:41,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957353205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:41,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:41,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:41,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295275535] [2022-07-12 10:26:41,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:41,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:41,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:41,483 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:41,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 537 transitions, 8107 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:41,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:41,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:41,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:43,812 INFO L129 PetriNetUnfolder]: 2692/7906 cut-off events. [2022-07-12 10:26:43,812 INFO L130 PetriNetUnfolder]: For 65903/66151 co-relation queries the response was YES. [2022-07-12 10:26:43,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42117 conditions, 7906 events. 2692/7906 cut-off events. For 65903/66151 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 91985 event pairs, 635 based on Foata normal form. 13/7767 useless extension candidates. Maximal degree in co-relation 41917. Up to 3075 conditions per place. [2022-07-12 10:26:43,935 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 284 selfloop transitions, 155 changer transitions 23/606 dead transitions. [2022-07-12 10:26:43,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 606 transitions, 9792 flow [2022-07-12 10:26:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:26:43,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:26:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2069 transitions. [2022-07-12 10:26:43,937 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7584310850439883 [2022-07-12 10:26:43,937 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2069 transitions. [2022-07-12 10:26:43,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2069 transitions. [2022-07-12 10:26:43,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:43,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2069 transitions. [2022-07-12 10:26:43,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.04545454545455) internal successors, (2069), 22 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:43,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:43,942 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:43,942 INFO L186 Difference]: Start difference. First operand has 609 places, 537 transitions, 8107 flow. Second operand 22 states and 2069 transitions. [2022-07-12 10:26:43,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 606 transitions, 9792 flow [2022-07-12 10:26:44,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 606 transitions, 9666 flow, removed 28 selfloop flow, removed 5 redundant places. [2022-07-12 10:26:44,493 INFO L242 Difference]: Finished difference. Result has 637 places, 565 transitions, 8857 flow [2022-07-12 10:26:44,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7990, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8857, PETRI_PLACES=637, PETRI_TRANSITIONS=565} [2022-07-12 10:26:44,494 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 525 predicate places. [2022-07-12 10:26:44,494 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 565 transitions, 8857 flow [2022-07-12 10:26:44,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:44,494 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:44,494 INFO L200 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] [2022-07-12 10:26:44,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-12 10:26:44,494 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:44,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1610730920, now seen corresponding path program 15 times [2022-07-12 10:26:44,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:44,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218510210] [2022-07-12 10:26:44,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:44,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:44,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:44,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218510210] [2022-07-12 10:26:44,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218510210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:44,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:44,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:44,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568394196] [2022-07-12 10:26:44,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:44,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:44,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:44,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:44,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:44,575 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:44,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 565 transitions, 8857 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:44,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:44,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:44,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:46,864 INFO L129 PetriNetUnfolder]: 2767/8171 cut-off events. [2022-07-12 10:26:46,864 INFO L130 PetriNetUnfolder]: For 77464/77712 co-relation queries the response was YES. [2022-07-12 10:26:47,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44911 conditions, 8171 events. 2767/8171 cut-off events. For 77464/77712 co-relation queries the response was YES. Maximal size of possible extension queue 1163. Compared 96008 event pairs, 654 based on Foata normal form. 10/8020 useless extension candidates. Maximal degree in co-relation 44701. Up to 3150 conditions per place. [2022-07-12 10:26:47,027 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 354 selfloop transitions, 110 changer transitions 21/629 dead transitions. [2022-07-12 10:26:47,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 629 transitions, 10691 flow [2022-07-12 10:26:47,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:26:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:26:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1979 transitions. [2022-07-12 10:26:47,028 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7599846390168971 [2022-07-12 10:26:47,028 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1979 transitions. [2022-07-12 10:26:47,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1979 transitions. [2022-07-12 10:26:47,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:47,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1979 transitions. [2022-07-12 10:26:47,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.23809523809524) internal successors, (1979), 21 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:47,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:47,032 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:47,032 INFO L186 Difference]: Start difference. First operand has 637 places, 565 transitions, 8857 flow. Second operand 21 states and 1979 transitions. [2022-07-12 10:26:47,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 629 transitions, 10691 flow [2022-07-12 10:26:47,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 629 transitions, 10577 flow, removed 57 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:47,751 INFO L242 Difference]: Finished difference. Result has 667 places, 591 transitions, 9644 flow [2022-07-12 10:26:47,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8745, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9644, PETRI_PLACES=667, PETRI_TRANSITIONS=591} [2022-07-12 10:26:47,752 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 555 predicate places. [2022-07-12 10:26:47,752 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 591 transitions, 9644 flow [2022-07-12 10:26:47,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:47,752 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:47,752 INFO L200 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] [2022-07-12 10:26:47,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-12 10:26:47,752 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash -350992242, now seen corresponding path program 16 times [2022-07-12 10:26:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:47,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975934902] [2022-07-12 10:26:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:47,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:47,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:47,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975934902] [2022-07-12 10:26:47,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975934902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:47,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:47,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:47,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561297602] [2022-07-12 10:26:47,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:47,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:47,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:47,836 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:47,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 591 transitions, 9644 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:47,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:47,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:47,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:50,175 INFO L129 PetriNetUnfolder]: 2768/8236 cut-off events. [2022-07-12 10:26:50,175 INFO L130 PetriNetUnfolder]: For 84425/84671 co-relation queries the response was YES. [2022-07-12 10:26:50,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46318 conditions, 8236 events. 2768/8236 cut-off events. For 84425/84671 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 97036 event pairs, 648 based on Foata normal form. 13/8097 useless extension candidates. Maximal degree in co-relation 46095. Up to 3252 conditions per place. [2022-07-12 10:26:50,460 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 301 selfloop transitions, 165 changer transitions 23/633 dead transitions. [2022-07-12 10:26:50,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 633 transitions, 11056 flow [2022-07-12 10:26:50,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:26:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:26:50,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1699 transitions. [2022-07-12 10:26:50,464 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7612007168458781 [2022-07-12 10:26:50,464 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1699 transitions. [2022-07-12 10:26:50,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1699 transitions. [2022-07-12 10:26:50,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:50,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1699 transitions. [2022-07-12 10:26:50,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.38888888888889) internal successors, (1699), 18 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,477 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,477 INFO L186 Difference]: Start difference. First operand has 667 places, 591 transitions, 9644 flow. Second operand 18 states and 1699 transitions. [2022-07-12 10:26:50,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 633 transitions, 11056 flow [2022-07-12 10:26:51,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 633 transitions, 10828 flow, removed 114 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:51,283 INFO L242 Difference]: Finished difference. Result has 687 places, 600 transitions, 9989 flow [2022-07-12 10:26:51,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9418, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9989, PETRI_PLACES=687, PETRI_TRANSITIONS=600} [2022-07-12 10:26:51,284 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 575 predicate places. [2022-07-12 10:26:51,285 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 600 transitions, 9989 flow [2022-07-12 10:26:51,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:51,285 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:51,285 INFO L200 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] [2022-07-12 10:26:51,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-12 10:26:51,286 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:51,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:51,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1825091412, now seen corresponding path program 17 times [2022-07-12 10:26:51,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:51,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195285008] [2022-07-12 10:26:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:51,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:51,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:51,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195285008] [2022-07-12 10:26:51,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195285008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:51,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:51,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:51,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271350555] [2022-07-12 10:26:51,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:51,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:51,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:51,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:51,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:51,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 600 transitions, 9989 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:51,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:51,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:51,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:53,973 INFO L129 PetriNetUnfolder]: 2886/8639 cut-off events. [2022-07-12 10:26:53,974 INFO L130 PetriNetUnfolder]: For 91329/91575 co-relation queries the response was YES. [2022-07-12 10:26:54,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49603 conditions, 8639 events. 2886/8639 cut-off events. For 91329/91575 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 103002 event pairs, 676 based on Foata normal form. 10/8476 useless extension candidates. Maximal degree in co-relation 49374. Up to 3334 conditions per place. [2022-07-12 10:26:54,150 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 358 selfloop transitions, 135 changer transitions 16/653 dead transitions. [2022-07-12 10:26:54,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 653 transitions, 11752 flow [2022-07-12 10:26:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:26:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:26:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1609 transitions. [2022-07-12 10:26:54,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632827324478179 [2022-07-12 10:26:54,152 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1609 transitions. [2022-07-12 10:26:54,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1609 transitions. [2022-07-12 10:26:54,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:54,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1609 transitions. [2022-07-12 10:26:54,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.6470588235294) internal successors, (1609), 17 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:54,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:54,156 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:54,156 INFO L186 Difference]: Start difference. First operand has 687 places, 600 transitions, 9989 flow. Second operand 17 states and 1609 transitions. [2022-07-12 10:26:54,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 653 transitions, 11752 flow [2022-07-12 10:26:54,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 653 transitions, 11494 flow, removed 52 selfloop flow, removed 6 redundant places. [2022-07-12 10:26:55,008 INFO L242 Difference]: Finished difference. Result has 703 places, 622 transitions, 10597 flow [2022-07-12 10:26:55,008 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9745, PETRI_DIFFERENCE_MINUEND_PLACES=679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10597, PETRI_PLACES=703, PETRI_TRANSITIONS=622} [2022-07-12 10:26:55,009 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 591 predicate places. [2022-07-12 10:26:55,009 INFO L495 AbstractCegarLoop]: Abstraction has has 703 places, 622 transitions, 10597 flow [2022-07-12 10:26:55,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:55,009 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:55,009 INFO L200 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] [2022-07-12 10:26:55,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-12 10:26:55,009 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:55,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash -35946754, now seen corresponding path program 18 times [2022-07-12 10:26:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:55,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568642222] [2022-07-12 10:26:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:55,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:55,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:55,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568642222] [2022-07-12 10:26:55,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568642222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:55,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:55,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:55,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159602179] [2022-07-12 10:26:55,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:55,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:55,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:55,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:55,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:55,086 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:55,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 622 transitions, 10597 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:55,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:55,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:55,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:57,972 INFO L129 PetriNetUnfolder]: 2968/8880 cut-off events. [2022-07-12 10:26:57,972 INFO L130 PetriNetUnfolder]: For 99107/99354 co-relation queries the response was YES. [2022-07-12 10:26:58,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52513 conditions, 8880 events. 2968/8880 cut-off events. For 99107/99354 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 106210 event pairs, 690 based on Foata normal form. 10/8719 useless extension candidates. Maximal degree in co-relation 52279. Up to 3429 conditions per place. [2022-07-12 10:26:58,138 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 384 selfloop transitions, 130 changer transitions 17/675 dead transitions. [2022-07-12 10:26:58,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 675 transitions, 12415 flow [2022-07-12 10:26:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:26:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:26:58,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1613 transitions. [2022-07-12 10:26:58,140 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7651802656546489 [2022-07-12 10:26:58,140 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1613 transitions. [2022-07-12 10:26:58,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1613 transitions. [2022-07-12 10:26:58,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:58,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1613 transitions. [2022-07-12 10:26:58,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.88235294117646) internal successors, (1613), 17 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:58,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:58,144 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:58,144 INFO L186 Difference]: Start difference. First operand has 703 places, 622 transitions, 10597 flow. Second operand 17 states and 1613 transitions. [2022-07-12 10:26:58,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 675 transitions, 12415 flow [2022-07-12 10:26:58,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 675 transitions, 12217 flow, removed 99 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:59,006 INFO L242 Difference]: Finished difference. Result has 723 places, 644 transitions, 11256 flow [2022-07-12 10:26:59,006 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10405, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=11256, PETRI_PLACES=723, PETRI_TRANSITIONS=644} [2022-07-12 10:26:59,007 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 611 predicate places. [2022-07-12 10:26:59,007 INFO L495 AbstractCegarLoop]: Abstraction has has 723 places, 644 transitions, 11256 flow [2022-07-12 10:26:59,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:59,007 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:59,007 INFO L200 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] [2022-07-12 10:26:59,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-12 10:26:59,008 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:59,008 INFO L85 PathProgramCache]: Analyzing trace with hash -992253680, now seen corresponding path program 19 times [2022-07-12 10:26:59,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:59,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326927551] [2022-07-12 10:26:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:59,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:59,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:59,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326927551] [2022-07-12 10:26:59,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326927551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:59,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:59,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:59,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869343354] [2022-07-12 10:26:59,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:59,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:59,084 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:26:59,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 644 transitions, 11256 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:59,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:59,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:26:59,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:01,937 INFO L129 PetriNetUnfolder]: 2982/9068 cut-off events. [2022-07-12 10:27:01,937 INFO L130 PetriNetUnfolder]: For 104758/105009 co-relation queries the response was YES. [2022-07-12 10:27:02,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53783 conditions, 9068 events. 2982/9068 cut-off events. For 104758/105009 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 109707 event pairs, 690 based on Foata normal form. 10/8907 useless extension candidates. Maximal degree in co-relation 53542. Up to 3443 conditions per place. [2022-07-12 10:27:02,142 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 381 selfloop transitions, 135 changer transitions 21/681 dead transitions. [2022-07-12 10:27:02,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 681 transitions, 12763 flow [2022-07-12 10:27:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:27:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:27:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2022-07-12 10:27:02,143 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2022-07-12 10:27:02,143 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2022-07-12 10:27:02,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2022-07-12 10:27:02,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:02,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2022-07-12 10:27:02,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:02,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:02,147 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:02,147 INFO L186 Difference]: Start difference. First operand has 723 places, 644 transitions, 11256 flow. Second operand 18 states and 1703 transitions. [2022-07-12 10:27:02,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 738 places, 681 transitions, 12763 flow [2022-07-12 10:27:03,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 681 transitions, 12479 flow, removed 106 selfloop flow, removed 3 redundant places. [2022-07-12 10:27:03,133 INFO L242 Difference]: Finished difference. Result has 739 places, 653 transitions, 11538 flow [2022-07-12 10:27:03,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11006, PETRI_DIFFERENCE_MINUEND_PLACES=718, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11538, PETRI_PLACES=739, PETRI_TRANSITIONS=653} [2022-07-12 10:27:03,134 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 627 predicate places. [2022-07-12 10:27:03,134 INFO L495 AbstractCegarLoop]: Abstraction has has 739 places, 653 transitions, 11538 flow [2022-07-12 10:27:03,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:03,134 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:03,135 INFO L200 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] [2022-07-12 10:27:03,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-12 10:27:03,135 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1337115450, now seen corresponding path program 20 times [2022-07-12 10:27:03,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:03,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994363171] [2022-07-12 10:27:03,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:03,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:03,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:03,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:03,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994363171] [2022-07-12 10:27:03,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994363171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:03,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:03,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:03,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149088603] [2022-07-12 10:27:03,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:03,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:03,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:03,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:03,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:03,216 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:03,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 653 transitions, 11538 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:03,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:03,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:03,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:06,544 INFO L129 PetriNetUnfolder]: 2982/9046 cut-off events. [2022-07-12 10:27:06,545 INFO L130 PetriNetUnfolder]: For 106334/106575 co-relation queries the response was YES. [2022-07-12 10:27:06,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53514 conditions, 9046 events. 2982/9046 cut-off events. For 106334/106575 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 109351 event pairs, 692 based on Foata normal form. 9/8888 useless extension candidates. Maximal degree in co-relation 53271. Up to 3462 conditions per place. [2022-07-12 10:27:06,885 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 100 selfloop transitions, 0 changer transitions 477/687 dead transitions. [2022-07-12 10:27:06,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 687 transitions, 12911 flow [2022-07-12 10:27:06,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:27:06,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:27:06,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2022-07-12 10:27:06,887 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2022-07-12 10:27:06,887 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2022-07-12 10:27:06,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2022-07-12 10:27:06,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:06,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2022-07-12 10:27:06,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:06,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:06,890 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:06,890 INFO L186 Difference]: Start difference. First operand has 739 places, 653 transitions, 11538 flow. Second operand 18 states and 1703 transitions. [2022-07-12 10:27:06,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 754 places, 687 transitions, 12911 flow [2022-07-12 10:27:07,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 687 transitions, 12702 flow, removed 71 selfloop flow, removed 17 redundant places. [2022-07-12 10:27:07,811 INFO L242 Difference]: Finished difference. Result has 740 places, 210 transitions, 2056 flow [2022-07-12 10:27:07,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11331, PETRI_DIFFERENCE_MINUEND_PLACES=720, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2056, PETRI_PLACES=740, PETRI_TRANSITIONS=210} [2022-07-12 10:27:07,811 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 628 predicate places. [2022-07-12 10:27:07,811 INFO L495 AbstractCegarLoop]: Abstraction has has 740 places, 210 transitions, 2056 flow [2022-07-12 10:27:07,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:07,811 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:07,812 INFO L200 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] [2022-07-12 10:27:07,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-12 10:27:07,812 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:07,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:07,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1046582820, now seen corresponding path program 4 times [2022-07-12 10:27:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:07,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397454998] [2022-07-12 10:27:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:07,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:07,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:07,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:07,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397454998] [2022-07-12 10:27:07,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397454998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:07,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:07,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:07,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122697911] [2022-07-12 10:27:07,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:07,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:07,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:07,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:07,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:07,905 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:07,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 740 places, 210 transitions, 2056 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:07,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:07,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:07,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:08,856 INFO L129 PetriNetUnfolder]: 1061/2981 cut-off events. [2022-07-12 10:27:08,857 INFO L130 PetriNetUnfolder]: For 12276/12376 co-relation queries the response was YES. [2022-07-12 10:27:08,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12314 conditions, 2981 events. 1061/2981 cut-off events. For 12276/12376 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 27899 event pairs, 127 based on Foata normal form. 3/2922 useless extension candidates. Maximal degree in co-relation 12084. Up to 864 conditions per place. [2022-07-12 10:27:08,909 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 105 selfloop transitions, 51 changer transitions 22/288 dead transitions. [2022-07-12 10:27:08,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 288 transitions, 3030 flow [2022-07-12 10:27:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:27:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:27:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1883 transitions. [2022-07-12 10:27:08,910 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7592741935483871 [2022-07-12 10:27:08,910 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1883 transitions. [2022-07-12 10:27:08,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1883 transitions. [2022-07-12 10:27:08,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:08,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1883 transitions. [2022-07-12 10:27:08,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.15) internal successors, (1883), 20 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:08,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:08,913 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:08,913 INFO L186 Difference]: Start difference. First operand has 740 places, 210 transitions, 2056 flow. Second operand 20 states and 1883 transitions. [2022-07-12 10:27:08,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 288 transitions, 3030 flow [2022-07-12 10:27:08,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 288 transitions, 2735 flow, removed 70 selfloop flow, removed 44 redundant places. [2022-07-12 10:27:08,977 INFO L242 Difference]: Finished difference. Result has 418 places, 244 transitions, 2372 flow [2022-07-12 10:27:08,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2372, PETRI_PLACES=418, PETRI_TRANSITIONS=244} [2022-07-12 10:27:08,978 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 306 predicate places. [2022-07-12 10:27:08,978 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 244 transitions, 2372 flow [2022-07-12 10:27:08,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:08,978 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:08,979 INFO L200 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] [2022-07-12 10:27:08,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-12 10:27:08,979 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:08,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2098260682, now seen corresponding path program 5 times [2022-07-12 10:27:08,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:08,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713252367] [2022-07-12 10:27:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:08,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:09,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:09,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713252367] [2022-07-12 10:27:09,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713252367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:09,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:09,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:09,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324724395] [2022-07-12 10:27:09,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:09,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:09,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:09,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:09,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:09,064 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:09,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 244 transitions, 2372 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:09,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:09,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:09,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:10,122 INFO L129 PetriNetUnfolder]: 1166/3377 cut-off events. [2022-07-12 10:27:10,123 INFO L130 PetriNetUnfolder]: For 17024/17136 co-relation queries the response was YES. [2022-07-12 10:27:10,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15279 conditions, 3377 events. 1166/3377 cut-off events. For 17024/17136 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 33126 event pairs, 50 based on Foata normal form. 9/3328 useless extension candidates. Maximal degree in co-relation 15069. Up to 523 conditions per place. [2022-07-12 10:27:10,181 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 107 selfloop transitions, 93 changer transitions 26/336 dead transitions. [2022-07-12 10:27:10,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 336 transitions, 3564 flow [2022-07-12 10:27:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:27:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:27:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2246 transitions. [2022-07-12 10:27:10,183 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7547043010752689 [2022-07-12 10:27:10,183 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2246 transitions. [2022-07-12 10:27:10,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2246 transitions. [2022-07-12 10:27:10,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:10,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2246 transitions. [2022-07-12 10:27:10,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 93.58333333333333) internal successors, (2246), 24 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:10,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:10,187 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:10,187 INFO L186 Difference]: Start difference. First operand has 418 places, 244 transitions, 2372 flow. Second operand 24 states and 2246 transitions. [2022-07-12 10:27:10,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 336 transitions, 3564 flow [2022-07-12 10:27:10,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 336 transitions, 3266 flow, removed 149 selfloop flow, removed 2 redundant places. [2022-07-12 10:27:10,343 INFO L242 Difference]: Finished difference. Result has 455 places, 269 transitions, 2759 flow [2022-07-12 10:27:10,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2178, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2759, PETRI_PLACES=455, PETRI_TRANSITIONS=269} [2022-07-12 10:27:10,344 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 343 predicate places. [2022-07-12 10:27:10,344 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 269 transitions, 2759 flow [2022-07-12 10:27:10,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:10,344 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:10,344 INFO L200 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] [2022-07-12 10:27:10,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-12 10:27:10,345 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:10,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash -582561648, now seen corresponding path program 6 times [2022-07-12 10:27:10,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:10,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786612523] [2022-07-12 10:27:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:10,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:10,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:10,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786612523] [2022-07-12 10:27:10,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786612523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:10,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:10,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:10,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256840370] [2022-07-12 10:27:10,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:10,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:10,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:10,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:10,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:10,422 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:10,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 269 transitions, 2759 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:10,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:10,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:10,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:11,700 INFO L129 PetriNetUnfolder]: 1415/4089 cut-off events. [2022-07-12 10:27:11,700 INFO L130 PetriNetUnfolder]: For 26423/26578 co-relation queries the response was YES. [2022-07-12 10:27:11,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19801 conditions, 4089 events. 1415/4089 cut-off events. For 26423/26578 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 41272 event pairs, 141 based on Foata normal form. 27/4039 useless extension candidates. Maximal degree in co-relation 19574. Up to 885 conditions per place. [2022-07-12 10:27:11,771 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 132 selfloop transitions, 86 changer transitions 24/352 dead transitions. [2022-07-12 10:27:11,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 352 transitions, 4133 flow [2022-07-12 10:27:11,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:27:11,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:27:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2065 transitions. [2022-07-12 10:27:11,772 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7569648093841642 [2022-07-12 10:27:11,772 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2065 transitions. [2022-07-12 10:27:11,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2065 transitions. [2022-07-12 10:27:11,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:11,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2065 transitions. [2022-07-12 10:27:11,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.86363636363636) internal successors, (2065), 22 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:11,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:11,775 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:11,775 INFO L186 Difference]: Start difference. First operand has 455 places, 269 transitions, 2759 flow. Second operand 22 states and 2065 transitions. [2022-07-12 10:27:11,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 352 transitions, 4133 flow [2022-07-12 10:27:12,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 352 transitions, 3892 flow, removed 21 selfloop flow, removed 7 redundant places. [2022-07-12 10:27:12,050 INFO L242 Difference]: Finished difference. Result has 481 places, 300 transitions, 3290 flow [2022-07-12 10:27:12,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3290, PETRI_PLACES=481, PETRI_TRANSITIONS=300} [2022-07-12 10:27:12,050 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 369 predicate places. [2022-07-12 10:27:12,051 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 300 transitions, 3290 flow [2022-07-12 10:27:12,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:12,051 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:12,051 INFO L200 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] [2022-07-12 10:27:12,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-12 10:27:12,051 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:12,051 INFO L85 PathProgramCache]: Analyzing trace with hash 800890864, now seen corresponding path program 7 times [2022-07-12 10:27:12,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:12,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855091008] [2022-07-12 10:27:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:12,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:12,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:12,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:12,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855091008] [2022-07-12 10:27:12,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855091008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:12,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:12,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:12,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302665710] [2022-07-12 10:27:12,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:12,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:12,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:12,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:12,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:12,133 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:12,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 300 transitions, 3290 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:12,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:12,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:12,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:13,482 INFO L129 PetriNetUnfolder]: 1486/4306 cut-off events. [2022-07-12 10:27:13,483 INFO L130 PetriNetUnfolder]: For 36547/36663 co-relation queries the response was YES. [2022-07-12 10:27:13,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22468 conditions, 4306 events. 1486/4306 cut-off events. For 36547/36663 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 44191 event pairs, 175 based on Foata normal form. 7/4226 useless extension candidates. Maximal degree in co-relation 22229. Up to 1101 conditions per place. [2022-07-12 10:27:13,581 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 159 selfloop transitions, 80 changer transitions 23/372 dead transitions. [2022-07-12 10:27:13,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 372 transitions, 4640 flow [2022-07-12 10:27:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:27:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:27:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1976 transitions. [2022-07-12 10:27:13,583 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7588325652841782 [2022-07-12 10:27:13,583 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1976 transitions. [2022-07-12 10:27:13,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1976 transitions. [2022-07-12 10:27:13,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:13,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1976 transitions. [2022-07-12 10:27:13,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.0952380952381) internal successors, (1976), 21 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:13,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:13,587 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:13,587 INFO L186 Difference]: Start difference. First operand has 481 places, 300 transitions, 3290 flow. Second operand 21 states and 1976 transitions. [2022-07-12 10:27:13,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 372 transitions, 4640 flow [2022-07-12 10:27:13,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 372 transitions, 4435 flow, removed 100 selfloop flow, removed 3 redundant places. [2022-07-12 10:27:13,990 INFO L242 Difference]: Finished difference. Result has 510 places, 326 transitions, 3795 flow [2022-07-12 10:27:13,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3104, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3795, PETRI_PLACES=510, PETRI_TRANSITIONS=326} [2022-07-12 10:27:13,990 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 398 predicate places. [2022-07-12 10:27:13,990 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 326 transitions, 3795 flow [2022-07-12 10:27:13,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:13,991 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:13,991 INFO L200 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] [2022-07-12 10:27:13,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-12 10:27:13,991 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:13,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2078556782, now seen corresponding path program 8 times [2022-07-12 10:27:13,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:13,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139959086] [2022-07-12 10:27:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:14,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:14,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:14,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139959086] [2022-07-12 10:27:14,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139959086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:14,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:14,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:14,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050803716] [2022-07-12 10:27:14,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:14,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:14,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:14,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:14,085 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:14,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 326 transitions, 3795 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:14,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:14,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:14,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:15,601 INFO L129 PetriNetUnfolder]: 1574/4737 cut-off events. [2022-07-12 10:27:15,601 INFO L130 PetriNetUnfolder]: For 44130/44264 co-relation queries the response was YES. [2022-07-12 10:27:15,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25177 conditions, 4737 events. 1574/4737 cut-off events. For 44130/44264 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 51039 event pairs, 183 based on Foata normal form. 11/4660 useless extension candidates. Maximal degree in co-relation 24926. Up to 1156 conditions per place. [2022-07-12 10:27:15,695 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 157 selfloop transitions, 110 changer transitions 19/396 dead transitions. [2022-07-12 10:27:15,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 396 transitions, 5105 flow [2022-07-12 10:27:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:27:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:27:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1879 transitions. [2022-07-12 10:27:15,696 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7576612903225807 [2022-07-12 10:27:15,696 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1879 transitions. [2022-07-12 10:27:15,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1879 transitions. [2022-07-12 10:27:15,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:15,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1879 transitions. [2022-07-12 10:27:15,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 93.95) internal successors, (1879), 20 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:15,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:15,699 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:15,699 INFO L186 Difference]: Start difference. First operand has 510 places, 326 transitions, 3795 flow. Second operand 20 states and 1879 transitions. [2022-07-12 10:27:15,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 396 transitions, 5105 flow [2022-07-12 10:27:16,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 396 transitions, 4851 flow, removed 127 selfloop flow, removed 2 redundant places. [2022-07-12 10:27:16,170 INFO L242 Difference]: Finished difference. Result has 538 places, 352 transitions, 4338 flow [2022-07-12 10:27:16,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3589, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4338, PETRI_PLACES=538, PETRI_TRANSITIONS=352} [2022-07-12 10:27:16,171 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 426 predicate places. [2022-07-12 10:27:16,171 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 352 transitions, 4338 flow [2022-07-12 10:27:16,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:16,171 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:16,171 INFO L200 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] [2022-07-12 10:27:16,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-12 10:27:16,172 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:16,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:16,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1287744040, now seen corresponding path program 9 times [2022-07-12 10:27:16,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:16,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556293224] [2022-07-12 10:27:16,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:16,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:16,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:16,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556293224] [2022-07-12 10:27:16,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556293224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:16,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:16,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:16,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832697218] [2022-07-12 10:27:16,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:16,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:16,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:16,244 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:16,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 352 transitions, 4338 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:16,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:16,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:16,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:17,953 INFO L129 PetriNetUnfolder]: 1639/4999 cut-off events. [2022-07-12 10:27:17,953 INFO L130 PetriNetUnfolder]: For 48713/48847 co-relation queries the response was YES. [2022-07-12 10:27:18,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27611 conditions, 4999 events. 1639/4999 cut-off events. For 48713/48847 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 54534 event pairs, 173 based on Foata normal form. 13/4922 useless extension candidates. Maximal degree in co-relation 27348. Up to 1225 conditions per place. [2022-07-12 10:27:18,056 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 166 selfloop transitions, 119 changer transitions 14/409 dead transitions. [2022-07-12 10:27:18,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 409 transitions, 5657 flow [2022-07-12 10:27:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:27:18,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:27:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1508 transitions. [2022-07-12 10:27:18,057 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-07-12 10:27:18,057 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1508 transitions. [2022-07-12 10:27:18,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1508 transitions. [2022-07-12 10:27:18,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:18,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1508 transitions. [2022-07-12 10:27:18,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.25) internal successors, (1508), 16 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:18,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:18,059 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:18,059 INFO L186 Difference]: Start difference. First operand has 538 places, 352 transitions, 4338 flow. Second operand 16 states and 1508 transitions. [2022-07-12 10:27:18,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 409 transitions, 5657 flow [2022-07-12 10:27:18,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 409 transitions, 5484 flow, removed 63 selfloop flow, removed 3 redundant places. [2022-07-12 10:27:18,423 INFO L242 Difference]: Finished difference. Result has 556 places, 370 transitions, 4811 flow [2022-07-12 10:27:18,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4228, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4811, PETRI_PLACES=556, PETRI_TRANSITIONS=370} [2022-07-12 10:27:18,424 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 444 predicate places. [2022-07-12 10:27:18,424 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 370 transitions, 4811 flow [2022-07-12 10:27:18,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:18,424 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:18,424 INFO L200 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] [2022-07-12 10:27:18,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-12 10:27:18,424 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:18,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:18,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2002501142, now seen corresponding path program 10 times [2022-07-12 10:27:18,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:18,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104046826] [2022-07-12 10:27:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:18,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:18,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:18,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104046826] [2022-07-12 10:27:18,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104046826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:18,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:18,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:18,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562637960] [2022-07-12 10:27:18,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:18,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:18,511 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:18,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 370 transitions, 4811 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:18,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:18,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:18,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:20,389 INFO L129 PetriNetUnfolder]: 1633/4986 cut-off events. [2022-07-12 10:27:20,389 INFO L130 PetriNetUnfolder]: For 44552/44684 co-relation queries the response was YES. [2022-07-12 10:27:20,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28184 conditions, 4986 events. 1633/4986 cut-off events. For 44552/44684 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 54230 event pairs, 149 based on Foata normal form. 17/4926 useless extension candidates. Maximal degree in co-relation 27915. Up to 1212 conditions per place. [2022-07-12 10:27:20,513 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 163 selfloop transitions, 123 changer transitions 23/419 dead transitions. [2022-07-12 10:27:20,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 419 transitions, 5982 flow [2022-07-12 10:27:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:27:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:27:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-07-12 10:27:20,515 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-07-12 10:27:20,515 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-07-12 10:27:20,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-07-12 10:27:20,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:20,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-07-12 10:27:20,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:20,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:20,519 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:20,519 INFO L186 Difference]: Start difference. First operand has 556 places, 370 transitions, 4811 flow. Second operand 18 states and 1693 transitions. [2022-07-12 10:27:20,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 419 transitions, 5982 flow [2022-07-12 10:27:21,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 419 transitions, 5830 flow, removed 52 selfloop flow, removed 3 redundant places. [2022-07-12 10:27:21,061 INFO L242 Difference]: Finished difference. Result has 575 places, 379 transitions, 5167 flow [2022-07-12 10:27:21,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4680, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5167, PETRI_PLACES=575, PETRI_TRANSITIONS=379} [2022-07-12 10:27:21,061 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 463 predicate places. [2022-07-12 10:27:21,061 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 379 transitions, 5167 flow [2022-07-12 10:27:21,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:21,062 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:21,062 INFO L200 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] [2022-07-12 10:27:21,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-12 10:27:21,062 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:21,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash 245406122, now seen corresponding path program 11 times [2022-07-12 10:27:21,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:21,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951236541] [2022-07-12 10:27:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:21,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:21,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951236541] [2022-07-12 10:27:21,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951236541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:21,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:21,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:21,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142377248] [2022-07-12 10:27:21,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:21,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:21,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:21,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:21,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:21,150 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:21,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 379 transitions, 5167 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:21,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:21,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:21,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:23,118 INFO L129 PetriNetUnfolder]: 1692/5244 cut-off events. [2022-07-12 10:27:23,118 INFO L130 PetriNetUnfolder]: For 52251/52389 co-relation queries the response was YES. [2022-07-12 10:27:23,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30437 conditions, 5244 events. 1692/5244 cut-off events. For 52251/52389 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 57912 event pairs, 194 based on Foata normal form. 7/5162 useless extension candidates. Maximal degree in co-relation 30163. Up to 1281 conditions per place. [2022-07-12 10:27:23,244 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 196 selfloop transitions, 109 changer transitions 17/432 dead transitions. [2022-07-12 10:27:23,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 432 transitions, 6487 flow [2022-07-12 10:27:23,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:27:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:27:23,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1698 transitions. [2022-07-12 10:27:23,246 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-07-12 10:27:23,246 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1698 transitions. [2022-07-12 10:27:23,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1698 transitions. [2022-07-12 10:27:23,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:23,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1698 transitions. [2022-07-12 10:27:23,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.33333333333333) internal successors, (1698), 18 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:23,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:23,249 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:23,249 INFO L186 Difference]: Start difference. First operand has 575 places, 379 transitions, 5167 flow. Second operand 18 states and 1698 transitions. [2022-07-12 10:27:23,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 432 transitions, 6487 flow [2022-07-12 10:27:23,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 432 transitions, 6261 flow, removed 66 selfloop flow, removed 6 redundant places. [2022-07-12 10:27:23,933 INFO L242 Difference]: Finished difference. Result has 590 places, 399 transitions, 5691 flow [2022-07-12 10:27:23,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4971, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5691, PETRI_PLACES=590, PETRI_TRANSITIONS=399} [2022-07-12 10:27:23,933 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 478 predicate places. [2022-07-12 10:27:23,934 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 399 transitions, 5691 flow [2022-07-12 10:27:23,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:23,934 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:23,934 INFO L200 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] [2022-07-12 10:27:23,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-12 10:27:23,934 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1821456120, now seen corresponding path program 12 times [2022-07-12 10:27:23,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:23,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191810398] [2022-07-12 10:27:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:23,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:24,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:24,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191810398] [2022-07-12 10:27:24,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191810398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:24,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:24,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388387645] [2022-07-12 10:27:24,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:24,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:24,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:24,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:24,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:24,011 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:24,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 399 transitions, 5691 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:24,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:24,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:24,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:26,170 INFO L129 PetriNetUnfolder]: 1734/5404 cut-off events. [2022-07-12 10:27:26,171 INFO L130 PetriNetUnfolder]: For 51795/51937 co-relation queries the response was YES. [2022-07-12 10:27:26,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31840 conditions, 5404 events. 1734/5404 cut-off events. For 51795/51937 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 60125 event pairs, 213 based on Foata normal form. 7/5316 useless extension candidates. Maximal degree in co-relation 31563. Up to 1363 conditions per place. [2022-07-12 10:27:26,287 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 178 selfloop transitions, 133 changer transitions 20/441 dead transitions. [2022-07-12 10:27:26,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 441 transitions, 6770 flow [2022-07-12 10:27:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:27:26,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:27:26,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1694 transitions. [2022-07-12 10:27:26,289 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7589605734767025 [2022-07-12 10:27:26,289 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1694 transitions. [2022-07-12 10:27:26,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1694 transitions. [2022-07-12 10:27:26,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:26,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1694 transitions. [2022-07-12 10:27:26,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.11111111111111) internal successors, (1694), 18 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:26,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:26,291 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:26,291 INFO L186 Difference]: Start difference. First operand has 590 places, 399 transitions, 5691 flow. Second operand 18 states and 1694 transitions. [2022-07-12 10:27:26,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 441 transitions, 6770 flow [2022-07-12 10:27:26,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 441 transitions, 6549 flow, removed 103 selfloop flow, removed 6 redundant places. [2022-07-12 10:27:26,814 INFO L242 Difference]: Finished difference. Result has 605 places, 412 transitions, 6023 flow [2022-07-12 10:27:26,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5472, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6023, PETRI_PLACES=605, PETRI_TRANSITIONS=412} [2022-07-12 10:27:26,815 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 493 predicate places. [2022-07-12 10:27:26,815 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 412 transitions, 6023 flow [2022-07-12 10:27:26,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:26,815 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:26,816 INFO L200 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] [2022-07-12 10:27:26,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-12 10:27:26,816 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:26,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:26,816 INFO L85 PathProgramCache]: Analyzing trace with hash -984917032, now seen corresponding path program 13 times [2022-07-12 10:27:26,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:26,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916213768] [2022-07-12 10:27:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:26,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:26,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:26,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916213768] [2022-07-12 10:27:26,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916213768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:26,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:26,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:26,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579258868] [2022-07-12 10:27:26,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:26,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:26,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:26,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:26,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:26,897 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:26,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 412 transitions, 6023 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:26,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:26,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:26,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:28,898 INFO L129 PetriNetUnfolder]: 1729/5375 cut-off events. [2022-07-12 10:27:28,898 INFO L130 PetriNetUnfolder]: For 51047/51189 co-relation queries the response was YES. [2022-07-12 10:27:29,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32263 conditions, 5375 events. 1729/5375 cut-off events. For 51047/51189 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 59726 event pairs, 222 based on Foata normal form. 7/5287 useless extension candidates. Maximal degree in co-relation 31985. Up to 1378 conditions per place. [2022-07-12 10:27:29,009 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 195 selfloop transitions, 118 changer transitions 22/445 dead transitions. [2022-07-12 10:27:29,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 445 transitions, 6956 flow [2022-07-12 10:27:29,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:27:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:27:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1604 transitions. [2022-07-12 10:27:29,011 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7609108159392789 [2022-07-12 10:27:29,011 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1604 transitions. [2022-07-12 10:27:29,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1604 transitions. [2022-07-12 10:27:29,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:29,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1604 transitions. [2022-07-12 10:27:29,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.3529411764706) internal successors, (1604), 17 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:29,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:29,013 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:29,013 INFO L186 Difference]: Start difference. First operand has 605 places, 412 transitions, 6023 flow. Second operand 17 states and 1604 transitions. [2022-07-12 10:27:29,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 445 transitions, 6956 flow [2022-07-12 10:27:29,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 445 transitions, 6833 flow, removed 32 selfloop flow, removed 5 redundant places. [2022-07-12 10:27:29,528 INFO L242 Difference]: Finished difference. Result has 619 places, 418 transitions, 6270 flow [2022-07-12 10:27:29,528 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5906, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6270, PETRI_PLACES=619, PETRI_TRANSITIONS=418} [2022-07-12 10:27:29,528 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 507 predicate places. [2022-07-12 10:27:29,529 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 418 transitions, 6270 flow [2022-07-12 10:27:29,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:29,529 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:29,529 INFO L200 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] [2022-07-12 10:27:29,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-12 10:27:29,529 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:29,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash -391827092, now seen corresponding path program 14 times [2022-07-12 10:27:29,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:29,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151691638] [2022-07-12 10:27:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:29,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:29,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:29,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151691638] [2022-07-12 10:27:29,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151691638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:29,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:29,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:29,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052799051] [2022-07-12 10:27:29,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:29,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:29,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:29,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:29,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:29,616 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:29,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 418 transitions, 6270 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:29,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:29,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:29,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:31,970 INFO L129 PetriNetUnfolder]: 1861/5942 cut-off events. [2022-07-12 10:27:31,970 INFO L130 PetriNetUnfolder]: For 59403/59535 co-relation queries the response was YES. [2022-07-12 10:27:32,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35168 conditions, 5942 events. 1861/5942 cut-off events. For 59403/59535 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 68208 event pairs, 171 based on Foata normal form. 9/5871 useless extension candidates. Maximal degree in co-relation 34889. Up to 1231 conditions per place. [2022-07-12 10:27:32,102 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 199 selfloop transitions, 155 changer transitions 23/487 dead transitions. [2022-07-12 10:27:32,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 487 transitions, 7758 flow [2022-07-12 10:27:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:27:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:27:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2063 transitions. [2022-07-12 10:27:32,103 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7562316715542522 [2022-07-12 10:27:32,103 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2063 transitions. [2022-07-12 10:27:32,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2063 transitions. [2022-07-12 10:27:32,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:32,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2063 transitions. [2022-07-12 10:27:32,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.77272727272727) internal successors, (2063), 22 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:32,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:32,106 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:32,106 INFO L186 Difference]: Start difference. First operand has 619 places, 418 transitions, 6270 flow. Second operand 22 states and 2063 transitions. [2022-07-12 10:27:32,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 487 transitions, 7758 flow [2022-07-12 10:27:32,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 487 transitions, 7634 flow, removed 27 selfloop flow, removed 5 redundant places. [2022-07-12 10:27:32,715 INFO L242 Difference]: Finished difference. Result has 647 places, 446 transitions, 7001 flow [2022-07-12 10:27:32,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6155, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7001, PETRI_PLACES=647, PETRI_TRANSITIONS=446} [2022-07-12 10:27:32,715 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 535 predicate places. [2022-07-12 10:27:32,716 INFO L495 AbstractCegarLoop]: Abstraction has has 647 places, 446 transitions, 7001 flow [2022-07-12 10:27:32,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:32,716 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:32,716 INFO L200 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] [2022-07-12 10:27:32,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-07-12 10:27:32,717 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:32,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:32,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1682575218, now seen corresponding path program 15 times [2022-07-12 10:27:32,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:32,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890319374] [2022-07-12 10:27:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:32,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:32,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:32,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890319374] [2022-07-12 10:27:32,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890319374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:32,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:32,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:27:32,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430425230] [2022-07-12 10:27:32,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:32,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:27:32,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:32,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:27:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:27:32,795 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-12 10:27:32,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 446 transitions, 7001 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:32,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:32,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-12 10:27:32,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:35,146 INFO L129 PetriNetUnfolder]: 1941/6354 cut-off events. [2022-07-12 10:27:35,147 INFO L130 PetriNetUnfolder]: For 70106/70238 co-relation queries the response was YES. [2022-07-12 10:27:35,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38401 conditions, 6354 events. 1941/6354 cut-off events. For 70106/70238 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 74443 event pairs, 175 based on Foata normal form. 9/6282 useless extension candidates. Maximal degree in co-relation 38112. Up to 1983 conditions per place. [2022-07-12 10:27:35,301 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 269 selfloop transitions, 110 changer transitions 21/510 dead transitions. [2022-07-12 10:27:35,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 510 transitions, 8644 flow [2022-07-12 10:27:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:27:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:27:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1973 transitions. [2022-07-12 10:27:35,303 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7576804915514593 [2022-07-12 10:27:35,303 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1973 transitions. [2022-07-12 10:27:35,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1973 transitions. [2022-07-12 10:27:35,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:35,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1973 transitions. [2022-07-12 10:27:35,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 93.95238095238095) internal successors, (1973), 21 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:35,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:35,306 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:35,306 INFO L186 Difference]: Start difference. First operand has 647 places, 446 transitions, 7001 flow. Second operand 21 states and 1973 transitions. [2022-07-12 10:27:35,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 510 transitions, 8644 flow