./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/parallel-barrier.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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:07:23,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:07:23,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:07:23,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:07:23,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:07:23,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:07:23,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:07:23,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:07:23,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:07:23,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:07:23,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:07:23,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:07:23,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:07:23,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:07:23,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:07:23,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:07:23,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:07:23,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:07:23,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:07:23,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:07:23,964 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:07:23,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:07:23,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:07:23,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:07:23,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:07:23,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:07:23,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:07:23,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:07:23,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:07:23,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:07:23,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:07:23,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:07:23,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:07:23,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:07:23,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:07:23,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:07:23,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:07:23,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:07:23,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:07:23,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:07:23,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:07:23,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:07:23,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:07:24,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:07:24,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:07:24,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:07:24,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:07:24,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:07:24,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:07:24,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:07:24,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:07:24,012 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:07:24,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:07:24,012 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:07:24,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:07:24,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:07:24,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:07:24,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:07:24,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:07:24,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:07:24,014 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:07:24,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:07:24,015 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:07:24,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:07:24,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:07:24,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:07:24,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:07:24,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:07:24,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:07:24,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:07:24,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:07:24,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:07:24,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:07:24,017 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:07:24,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:07:24,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:07:24,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-07-13 22:07:24,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:07:24,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:07:24,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:07:24,277 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:07:24,277 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:07:24,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-07-13 22:07:24,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f7e2926/45a4544158a34ddd975fea97c5b97119/FLAG769149910 [2022-07-13 22:07:24,672 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:07:24,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-07-13 22:07:24,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f7e2926/45a4544158a34ddd975fea97c5b97119/FLAG769149910 [2022-07-13 22:07:24,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f7e2926/45a4544158a34ddd975fea97c5b97119 [2022-07-13 22:07:24,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:07:24,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:07:24,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:07:24,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:07:24,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:07:24,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:07:24" (1/1) ... [2022-07-13 22:07:24,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8989f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:24, skipping insertion in model container [2022-07-13 22:07:24,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:07:24" (1/1) ... [2022-07-13 22:07:24,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:07:24,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:07:24,962 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/parallel-barrier.wvr.c[4722,4735] [2022-07-13 22:07:24,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:07:24,976 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:07:25,018 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/parallel-barrier.wvr.c[4722,4735] [2022-07-13 22:07:25,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:07:25,041 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:07:25,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25 WrapperNode [2022-07-13 22:07:25,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:07:25,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:07:25,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:07:25,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:07:25,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25" (1/1) ... [2022-07-13 22:07:25,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25" (1/1) ... [2022-07-13 22:07:25,092 INFO L137 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-07-13 22:07:25,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:07:25,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:07:25,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:07:25,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:07:25,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25" (1/1) ... [2022-07-13 22:07:25,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25" (1/1) ... [2022-07-13 22:07:25,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25" (1/1) ... [2022-07-13 22:07:25,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25" (1/1) ... [2022-07-13 22:07:25,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25" (1/1) ... [2022-07-13 22:07:25,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25" (1/1) ... [2022-07-13 22:07:25,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25" (1/1) ... [2022-07-13 22:07:25,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:07:25,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:07:25,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:07:25,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:07:25,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25" (1/1) ... [2022-07-13 22:07:25,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:07:25,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:07:25,171 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) [2022-07-13 22:07:25,173 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 [2022-07-13 22:07:25,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:07:25,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:07:25,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:07:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:07:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:07:25,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:07:25,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:07:25,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:07:25,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:07:25,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:07:25,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-13 22:07:25,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-13 22:07:25,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:07:25,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-13 22:07:25,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-13 22:07:25,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-13 22:07:25,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-13 22:07:25,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 22:07:25,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 22:07:25,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:07:25,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:07:25,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:07:25,206 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:07:25,293 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:07:25,295 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:07:25,533 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:07:25,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:07:25,601 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:07:25,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:07:25 BoogieIcfgContainer [2022-07-13 22:07:25,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:07:25,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:07:25,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:07:25,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:07:25,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:07:24" (1/3) ... [2022-07-13 22:07:25,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1469c056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:07:25, skipping insertion in model container [2022-07-13 22:07:25,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:25" (2/3) ... [2022-07-13 22:07:25,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1469c056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:07:25, skipping insertion in model container [2022-07-13 22:07:25,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:07:25" (3/3) ... [2022-07-13 22:07:25,608 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-07-13 22:07:25,611 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:07:25,620 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:07:25,620 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:07:25,621 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:07:25,726 INFO L135 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-07-13 22:07:25,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 246 places, 235 transitions, 542 flow [2022-07-13 22:07:25,831 INFO L129 PetriNetUnfolder]: 8/207 cut-off events. [2022-07-13 22:07:25,831 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-13 22:07:25,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 207 events. 8/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 241 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-07-13 22:07:25,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 235 transitions, 542 flow [2022-07-13 22:07:25,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 198 transitions, 444 flow [2022-07-13 22:07:25,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:07:25,851 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@571c2b4b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25134e68 [2022-07-13 22:07:25,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-13 22:07:25,902 INFO L129 PetriNetUnfolder]: 8/197 cut-off events. [2022-07-13 22:07:25,904 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-13 22:07:25,905 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:25,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:25,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:07:25,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:25,910 INFO L85 PathProgramCache]: Analyzing trace with hash -436231963, now seen corresponding path program 1 times [2022-07-13 22:07:25,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:25,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367346577] [2022-07-13 22:07:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:25,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:26,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:26,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367346577] [2022-07-13 22:07:26,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367346577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:26,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:26,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:07:26,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353607548] [2022-07-13 22:07:26,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:26,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:07:26,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:07:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:07:26,378 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-07-13 22:07:26,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 198 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:26,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:26,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-07-13 22:07:26,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:26,705 INFO L129 PetriNetUnfolder]: 354/1315 cut-off events. [2022-07-13 22:07:26,705 INFO L130 PetriNetUnfolder]: For 424/424 co-relation queries the response was YES. [2022-07-13 22:07:26,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 1315 events. 354/1315 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7852 event pairs, 170 based on Foata normal form. 41/1228 useless extension candidates. Maximal degree in co-relation 2051. Up to 365 conditions per place. [2022-07-13 22:07:26,720 INFO L132 encePairwiseOnDemand]: 228/239 looper letters, 49 selfloop transitions, 6 changer transitions 3/222 dead transitions. [2022-07-13 22:07:26,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 222 transitions, 670 flow [2022-07-13 22:07:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:07:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:07:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1054 transitions. [2022-07-13 22:07:26,738 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8820083682008368 [2022-07-13 22:07:26,739 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1054 transitions. [2022-07-13 22:07:26,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1054 transitions. [2022-07-13 22:07:26,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:26,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1054 transitions. [2022-07-13 22:07:26,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.8) internal successors, (1054), 5 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:26,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:26,756 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:26,757 INFO L186 Difference]: Start difference. First operand has 209 places, 198 transitions, 444 flow. Second operand 5 states and 1054 transitions. [2022-07-13 22:07:26,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 222 transitions, 670 flow [2022-07-13 22:07:26,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 222 transitions, 594 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-07-13 22:07:26,768 INFO L242 Difference]: Finished difference. Result has 202 places, 191 transitions, 416 flow [2022-07-13 22:07:26,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=202, PETRI_TRANSITIONS=191} [2022-07-13 22:07:26,774 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2022-07-13 22:07:26,774 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 191 transitions, 416 flow [2022-07-13 22:07:26,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:26,776 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:26,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:26,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:07:26,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:07:26,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:26,778 INFO L85 PathProgramCache]: Analyzing trace with hash -593111343, now seen corresponding path program 2 times [2022-07-13 22:07:26,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:26,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295183838] [2022-07-13 22:07:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:27,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:27,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295183838] [2022-07-13 22:07:27,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295183838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:27,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:27,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:07:27,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023544896] [2022-07-13 22:07:27,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:27,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:07:27,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:27,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:07:27,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:07:27,053 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-07-13 22:07:27,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 191 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:27,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-07-13 22:07:27,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:27,290 INFO L129 PetriNetUnfolder]: 300/1198 cut-off events. [2022-07-13 22:07:27,290 INFO L130 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2022-07-13 22:07:27,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1829 conditions, 1198 events. 300/1198 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6862 event pairs, 128 based on Foata normal form. 22/1098 useless extension candidates. Maximal degree in co-relation 1402. Up to 289 conditions per place. [2022-07-13 22:07:27,299 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 48 selfloop transitions, 6 changer transitions 1/218 dead transitions. [2022-07-13 22:07:27,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 607 flow [2022-07-13 22:07:27,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:07:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:07:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-07-13 22:07:27,322 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-07-13 22:07:27,322 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-07-13 22:07:27,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-07-13 22:07:27,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:27,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-07-13 22:07:27,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,327 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,327 INFO L186 Difference]: Start difference. First operand has 202 places, 191 transitions, 416 flow. Second operand 5 states and 1046 transitions. [2022-07-13 22:07:27,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 607 flow [2022-07-13 22:07:27,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 595 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:07:27,333 INFO L242 Difference]: Finished difference. Result has 200 places, 190 transitions, 420 flow [2022-07-13 22:07:27,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-07-13 22:07:27,334 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-07-13 22:07:27,334 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 420 flow [2022-07-13 22:07:27,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,335 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:27,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:27,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:07:27,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:07:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:27,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2021275627, now seen corresponding path program 1 times [2022-07-13 22:07:27,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:27,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658383232] [2022-07-13 22:07:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:27,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:27,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:27,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658383232] [2022-07-13 22:07:27,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658383232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:27,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:27,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:07:27,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182590437] [2022-07-13 22:07:27,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:27,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:07:27,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:27,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:07:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:07:27,569 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-07-13 22:07:27,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:27,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-07-13 22:07:27,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:27,793 INFO L129 PetriNetUnfolder]: 311/1167 cut-off events. [2022-07-13 22:07:27,793 INFO L130 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-07-13 22:07:27,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1900 conditions, 1167 events. 311/1167 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6695 event pairs, 141 based on Foata normal form. 11/1085 useless extension candidates. Maximal degree in co-relation 1581. Up to 327 conditions per place. [2022-07-13 22:07:27,802 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 49 selfloop transitions, 6 changer transitions 0/218 dead transitions. [2022-07-13 22:07:27,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 614 flow [2022-07-13 22:07:27,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:07:27,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:07:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-07-13 22:07:27,805 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-07-13 22:07:27,805 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-07-13 22:07:27,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-07-13 22:07:27,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:27,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-07-13 22:07:27,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,810 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,810 INFO L186 Difference]: Start difference. First operand has 200 places, 190 transitions, 420 flow. Second operand 5 states and 1046 transitions. [2022-07-13 22:07:27,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 614 flow [2022-07-13 22:07:27,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 602 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:07:27,814 INFO L242 Difference]: Finished difference. Result has 200 places, 190 transitions, 426 flow [2022-07-13 22:07:27,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-07-13 22:07:27,815 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-07-13 22:07:27,815 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 426 flow [2022-07-13 22:07:27,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:27,816 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:27,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:27,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:07:27,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:07:27,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:27,817 INFO L85 PathProgramCache]: Analyzing trace with hash 989998079, now seen corresponding path program 2 times [2022-07-13 22:07:27,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:27,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932925111] [2022-07-13 22:07:27,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:27,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:28,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:28,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932925111] [2022-07-13 22:07:28,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932925111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:28,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:28,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-13 22:07:28,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291486650] [2022-07-13 22:07:28,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:28,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 22:07:28,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:28,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 22:07:28,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:07:28,534 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-13 22:07:28,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 426 flow. Second operand has 21 states, 21 states have (on average 165.71428571428572) internal successors, (3480), 21 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:28,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:28,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-13 22:07:28,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:31,825 INFO L129 PetriNetUnfolder]: 5258/9715 cut-off events. [2022-07-13 22:07:31,825 INFO L130 PetriNetUnfolder]: For 1673/1673 co-relation queries the response was YES. [2022-07-13 22:07:31,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18897 conditions, 9715 events. 5258/9715 cut-off events. For 1673/1673 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 69625 event pairs, 802 based on Foata normal form. 2/8918 useless extension candidates. Maximal degree in co-relation 18044. Up to 3952 conditions per place. [2022-07-13 22:07:31,887 INFO L132 encePairwiseOnDemand]: 216/239 looper letters, 222 selfloop transitions, 105 changer transitions 31/487 dead transitions. [2022-07-13 22:07:31,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 487 transitions, 1894 flow [2022-07-13 22:07:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:07:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:07:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 6065 transitions. [2022-07-13 22:07:31,899 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7250448296473401 [2022-07-13 22:07:31,899 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 6065 transitions. [2022-07-13 22:07:31,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 6065 transitions. [2022-07-13 22:07:31,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:31,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 6065 transitions. [2022-07-13 22:07:31,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 173.28571428571428) internal successors, (6065), 35 states have internal predecessors, (6065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:31,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 239.0) internal successors, (8604), 36 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:31,921 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 239.0) internal successors, (8604), 36 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:31,921 INFO L186 Difference]: Start difference. First operand has 200 places, 190 transitions, 426 flow. Second operand 35 states and 6065 transitions. [2022-07-13 22:07:31,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 487 transitions, 1894 flow [2022-07-13 22:07:31,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 487 transitions, 1866 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:07:31,929 INFO L242 Difference]: Finished difference. Result has 251 places, 296 transitions, 1012 flow [2022-07-13 22:07:31,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1012, PETRI_PLACES=251, PETRI_TRANSITIONS=296} [2022-07-13 22:07:31,930 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 42 predicate places. [2022-07-13 22:07:31,930 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 296 transitions, 1012 flow [2022-07-13 22:07:31,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 165.71428571428572) internal successors, (3480), 21 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:31,931 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:31,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:31,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:07:31,932 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:07:31,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1568437147, now seen corresponding path program 3 times [2022-07-13 22:07:31,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:31,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164391366] [2022-07-13 22:07:31,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:31,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:32,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:32,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164391366] [2022-07-13 22:07:32,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164391366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:32,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:32,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:07:32,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149413503] [2022-07-13 22:07:32,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:32,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:07:32,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:32,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:07:32,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:07:32,074 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 239 [2022-07-13 22:07:32,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 296 transitions, 1012 flow. Second operand has 6 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:32,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:32,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 239 [2022-07-13 22:07:32,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:32,597 INFO L129 PetriNetUnfolder]: 1428/3922 cut-off events. [2022-07-13 22:07:32,597 INFO L130 PetriNetUnfolder]: For 2141/2160 co-relation queries the response was YES. [2022-07-13 22:07:32,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 3922 events. 1428/3922 cut-off events. For 2141/2160 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30082 event pairs, 482 based on Foata normal form. 44/3378 useless extension candidates. Maximal degree in co-relation 7819. Up to 1041 conditions per place. [2022-07-13 22:07:32,629 INFO L132 encePairwiseOnDemand]: 231/239 looper letters, 51 selfloop transitions, 7 changer transitions 0/322 dead transitions. [2022-07-13 22:07:32,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 322 transitions, 1210 flow [2022-07-13 22:07:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:07:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:07:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1229 transitions. [2022-07-13 22:07:32,632 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8570432357043236 [2022-07-13 22:07:32,632 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1229 transitions. [2022-07-13 22:07:32,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1229 transitions. [2022-07-13 22:07:32,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:32,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1229 transitions. [2022-07-13 22:07:32,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:32,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:32,638 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:32,638 INFO L186 Difference]: Start difference. First operand has 251 places, 296 transitions, 1012 flow. Second operand 6 states and 1229 transitions. [2022-07-13 22:07:32,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 322 transitions, 1210 flow [2022-07-13 22:07:32,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 322 transitions, 1198 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-13 22:07:32,651 INFO L242 Difference]: Finished difference. Result has 247 places, 294 transitions, 1012 flow [2022-07-13 22:07:32,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1012, PETRI_PLACES=247, PETRI_TRANSITIONS=294} [2022-07-13 22:07:32,653 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 38 predicate places. [2022-07-13 22:07:32,654 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 294 transitions, 1012 flow [2022-07-13 22:07:32,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:32,654 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:32,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:32,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:07:32,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:07:32,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:32,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1338714575, now seen corresponding path program 4 times [2022-07-13 22:07:32,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:32,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663464864] [2022-07-13 22:07:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:32,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:33,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:33,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663464864] [2022-07-13 22:07:33,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663464864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:33,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:33,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-13 22:07:33,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221992] [2022-07-13 22:07:33,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:33,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 22:07:33,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:33,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 22:07:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-07-13 22:07:33,135 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-13 22:07:33,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 294 transitions, 1012 flow. Second operand has 23 states, 23 states have (on average 165.47826086956522) internal successors, (3806), 23 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:33,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:33,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-13 22:07:33,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:36,164 INFO L129 PetriNetUnfolder]: 5419/10357 cut-off events. [2022-07-13 22:07:36,165 INFO L130 PetriNetUnfolder]: For 13991/13991 co-relation queries the response was YES. [2022-07-13 22:07:36,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28485 conditions, 10357 events. 5419/10357 cut-off events. For 13991/13991 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 75405 event pairs, 1450 based on Foata normal form. 1/9502 useless extension candidates. Maximal degree in co-relation 27167. Up to 4719 conditions per place. [2022-07-13 22:07:36,245 INFO L132 encePairwiseOnDemand]: 214/239 looper letters, 278 selfloop transitions, 118 changer transitions 23/548 dead transitions. [2022-07-13 22:07:36,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 548 transitions, 3017 flow [2022-07-13 22:07:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-13 22:07:36,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-13 22:07:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5716 transitions. [2022-07-13 22:07:36,254 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7247369088373272 [2022-07-13 22:07:36,254 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5716 transitions. [2022-07-13 22:07:36,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5716 transitions. [2022-07-13 22:07:36,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:36,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5716 transitions. [2022-07-13 22:07:36,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 173.21212121212122) internal successors, (5716), 33 states have internal predecessors, (5716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:36,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 239.0) internal successors, (8126), 34 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:36,288 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 239.0) internal successors, (8126), 34 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:36,288 INFO L186 Difference]: Start difference. First operand has 247 places, 294 transitions, 1012 flow. Second operand 33 states and 5716 transitions. [2022-07-13 22:07:36,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 548 transitions, 3017 flow [2022-07-13 22:07:36,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 548 transitions, 2997 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-13 22:07:36,327 INFO L242 Difference]: Finished difference. Result has 292 places, 367 transitions, 1759 flow [2022-07-13 22:07:36,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1759, PETRI_PLACES=292, PETRI_TRANSITIONS=367} [2022-07-13 22:07:36,329 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 83 predicate places. [2022-07-13 22:07:36,329 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 367 transitions, 1759 flow [2022-07-13 22:07:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 165.47826086956522) internal successors, (3806), 23 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:36,330 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:36,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:36,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:07:36,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:07:36,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash 738858935, now seen corresponding path program 5 times [2022-07-13 22:07:36,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:36,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774320085] [2022-07-13 22:07:36,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:36,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:36,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:36,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774320085] [2022-07-13 22:07:36,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774320085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:36,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:36,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-13 22:07:36,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062575911] [2022-07-13 22:07:36,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:36,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 22:07:36,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:36,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 22:07:36,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:07:36,891 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-13 22:07:36,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 367 transitions, 1759 flow. Second operand has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:36,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:36,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-13 22:07:36,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:41,178 INFO L129 PetriNetUnfolder]: 6663/13005 cut-off events. [2022-07-13 22:07:41,178 INFO L130 PetriNetUnfolder]: For 37279/37279 co-relation queries the response was YES. [2022-07-13 22:07:41,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42554 conditions, 13005 events. 6663/13005 cut-off events. For 37279/37279 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 101680 event pairs, 2001 based on Foata normal form. 1/11905 useless extension candidates. Maximal degree in co-relation 42496. Up to 6337 conditions per place. [2022-07-13 22:07:41,379 INFO L132 encePairwiseOnDemand]: 214/239 looper letters, 471 selfloop transitions, 153 changer transitions 22/775 dead transitions. [2022-07-13 22:07:41,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 775 transitions, 5097 flow [2022-07-13 22:07:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-13 22:07:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-13 22:07:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8938 transitions. [2022-07-13 22:07:41,392 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7191824911490183 [2022-07-13 22:07:41,393 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8938 transitions. [2022-07-13 22:07:41,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8938 transitions. [2022-07-13 22:07:41,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:41,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8938 transitions. [2022-07-13 22:07:41,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 171.8846153846154) internal successors, (8938), 52 states have internal predecessors, (8938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:41,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:41,433 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:41,434 INFO L186 Difference]: Start difference. First operand has 292 places, 367 transitions, 1759 flow. Second operand 52 states and 8938 transitions. [2022-07-13 22:07:41,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 775 transitions, 5097 flow [2022-07-13 22:07:41,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 775 transitions, 4872 flow, removed 87 selfloop flow, removed 7 redundant places. [2022-07-13 22:07:41,562 INFO L242 Difference]: Finished difference. Result has 346 places, 491 transitions, 3010 flow [2022-07-13 22:07:41,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3010, PETRI_PLACES=346, PETRI_TRANSITIONS=491} [2022-07-13 22:07:41,563 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 137 predicate places. [2022-07-13 22:07:41,564 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 491 transitions, 3010 flow [2022-07-13 22:07:41,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:41,565 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:41,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:41,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:07:41,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:07:41,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:41,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2118239061, now seen corresponding path program 6 times [2022-07-13 22:07:41,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:41,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491152971] [2022-07-13 22:07:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:41,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:42,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:42,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491152971] [2022-07-13 22:07:42,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491152971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:42,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:42,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-13 22:07:42,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349094511] [2022-07-13 22:07:42,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:42,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 22:07:42,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 22:07:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-07-13 22:07:42,354 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-13 22:07:42,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 491 transitions, 3010 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:42,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:42,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-13 22:07:42,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:48,972 INFO L129 PetriNetUnfolder]: 9115/17769 cut-off events. [2022-07-13 22:07:48,972 INFO L130 PetriNetUnfolder]: For 67849/67849 co-relation queries the response was YES. [2022-07-13 22:07:49,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63605 conditions, 17769 events. 9115/17769 cut-off events. For 67849/67849 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 145045 event pairs, 2596 based on Foata normal form. 1/16357 useless extension candidates. Maximal degree in co-relation 63530. Up to 8014 conditions per place. [2022-07-13 22:07:49,206 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 657 selfloop transitions, 300 changer transitions 15/1095 dead transitions. [2022-07-13 22:07:49,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 1095 transitions, 8865 flow [2022-07-13 22:07:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-13 22:07:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-07-13 22:07:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 10692 transitions. [2022-07-13 22:07:49,216 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.688252333440618 [2022-07-13 22:07:49,217 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 10692 transitions. [2022-07-13 22:07:49,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 10692 transitions. [2022-07-13 22:07:49,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:49,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 10692 transitions. [2022-07-13 22:07:49,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 164.4923076923077) internal successors, (10692), 65 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:49,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 239.0) internal successors, (15774), 66 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:49,248 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 239.0) internal successors, (15774), 66 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:49,248 INFO L186 Difference]: Start difference. First operand has 346 places, 491 transitions, 3010 flow. Second operand 65 states and 10692 transitions. [2022-07-13 22:07:49,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 1095 transitions, 8865 flow [2022-07-13 22:07:49,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 1095 transitions, 8189 flow, removed 336 selfloop flow, removed 5 redundant places. [2022-07-13 22:07:49,998 INFO L242 Difference]: Finished difference. Result has 428 places, 740 transitions, 5602 flow [2022-07-13 22:07:49,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=5602, PETRI_PLACES=428, PETRI_TRANSITIONS=740} [2022-07-13 22:07:50,000 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 219 predicate places. [2022-07-13 22:07:50,000 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 740 transitions, 5602 flow [2022-07-13 22:07:50,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:50,002 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:50,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:50,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:07:50,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:07:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:50,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1612794211, now seen corresponding path program 7 times [2022-07-13 22:07:50,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:50,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801759998] [2022-07-13 22:07:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:50,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:50,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801759998] [2022-07-13 22:07:50,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801759998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:50,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:50,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-13 22:07:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302244403] [2022-07-13 22:07:50,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:50,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 22:07:50,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 22:07:50,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-07-13 22:07:50,645 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-13 22:07:50,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 740 transitions, 5602 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:50,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:50,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-13 22:07:50,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:58,439 INFO L129 PetriNetUnfolder]: 10813/20899 cut-off events. [2022-07-13 22:07:58,439 INFO L130 PetriNetUnfolder]: For 111406/111406 co-relation queries the response was YES. [2022-07-13 22:07:58,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81769 conditions, 20899 events. 10813/20899 cut-off events. For 111406/111406 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 173817 event pairs, 2550 based on Foata normal form. 1/19277 useless extension candidates. Maximal degree in co-relation 81664. Up to 9278 conditions per place. [2022-07-13 22:07:59,090 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 805 selfloop transitions, 438 changer transitions 15/1381 dead transitions. [2022-07-13 22:07:59,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 1381 transitions, 13234 flow [2022-07-13 22:07:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-07-13 22:07:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-07-13 22:07:59,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 14656 transitions. [2022-07-13 22:07:59,104 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6813575081357508 [2022-07-13 22:07:59,104 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 14656 transitions. [2022-07-13 22:07:59,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 14656 transitions. [2022-07-13 22:07:59,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:59,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 14656 transitions. [2022-07-13 22:07:59,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 162.84444444444443) internal successors, (14656), 90 states have internal predecessors, (14656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:59,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 239.0) internal successors, (21749), 91 states have internal predecessors, (21749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:59,146 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 239.0) internal successors, (21749), 91 states have internal predecessors, (21749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:59,146 INFO L186 Difference]: Start difference. First operand has 428 places, 740 transitions, 5602 flow. Second operand 90 states and 14656 transitions. [2022-07-13 22:07:59,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 1381 transitions, 13234 flow [2022-07-13 22:07:59,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 1381 transitions, 12482 flow, removed 374 selfloop flow, removed 5 redundant places. [2022-07-13 22:07:59,916 INFO L242 Difference]: Finished difference. Result has 544 places, 1013 transitions, 9073 flow [2022-07-13 22:07:59,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=4860, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=9073, PETRI_PLACES=544, PETRI_TRANSITIONS=1013} [2022-07-13 22:07:59,918 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 335 predicate places. [2022-07-13 22:07:59,918 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 1013 transitions, 9073 flow [2022-07-13 22:07:59,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:59,920 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:59,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:59,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:07:59,920 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:07:59,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:59,921 INFO L85 PathProgramCache]: Analyzing trace with hash -986311525, now seen corresponding path program 8 times [2022-07-13 22:07:59,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:59,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570667508] [2022-07-13 22:07:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:59,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:00,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:00,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570667508] [2022-07-13 22:08:00,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570667508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:00,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:00,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-13 22:08:00,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348267538] [2022-07-13 22:08:00,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:00,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 22:08:00,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:00,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 22:08:00,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:08:00,449 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-13 22:08:00,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 1013 transitions, 9073 flow. Second operand has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:00,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:00,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-13 22:08:00,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:07,569 INFO L129 PetriNetUnfolder]: 12043/23215 cut-off events. [2022-07-13 22:08:07,569 INFO L130 PetriNetUnfolder]: For 281308/281352 co-relation queries the response was YES. [2022-07-13 22:08:08,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102912 conditions, 23215 events. 12043/23215 cut-off events. For 281308/281352 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 199581 event pairs, 2589 based on Foata normal form. 7/21284 useless extension candidates. Maximal degree in co-relation 102769. Up to 10034 conditions per place. [2022-07-13 22:08:08,474 INFO L132 encePairwiseOnDemand]: 214/239 looper letters, 794 selfloop transitions, 490 changer transitions 20/1443 dead transitions. [2022-07-13 22:08:08,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1443 transitions, 15893 flow [2022-07-13 22:08:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-13 22:08:08,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-13 22:08:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6951 transitions. [2022-07-13 22:08:08,479 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.727092050209205 [2022-07-13 22:08:08,479 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6951 transitions. [2022-07-13 22:08:08,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6951 transitions. [2022-07-13 22:08:08,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:08,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6951 transitions. [2022-07-13 22:08:08,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 173.775) internal successors, (6951), 40 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:08,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 239.0) internal successors, (9799), 41 states have internal predecessors, (9799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:08,497 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 239.0) internal successors, (9799), 41 states have internal predecessors, (9799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:08,498 INFO L186 Difference]: Start difference. First operand has 544 places, 1013 transitions, 9073 flow. Second operand 40 states and 6951 transitions. [2022-07-13 22:08:08,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1443 transitions, 15893 flow [2022-07-13 22:08:11,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 1443 transitions, 14288 flow, removed 796 selfloop flow, removed 5 redundant places. [2022-07-13 22:08:11,916 INFO L242 Difference]: Finished difference. Result has 592 places, 1181 transitions, 11129 flow [2022-07-13 22:08:11,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=7516, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1013, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=11129, PETRI_PLACES=592, PETRI_TRANSITIONS=1181} [2022-07-13 22:08:11,921 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 383 predicate places. [2022-07-13 22:08:11,921 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 1181 transitions, 11129 flow [2022-07-13 22:08:11,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:11,950 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:11,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:11,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:08:11,951 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:11,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:11,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1593302151, now seen corresponding path program 9 times [2022-07-13 22:08:11,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:11,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575144194] [2022-07-13 22:08:11,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:11,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:13,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:13,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575144194] [2022-07-13 22:08:13,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575144194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:13,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:13,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-13 22:08:13,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285123552] [2022-07-13 22:08:13,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:13,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 22:08:13,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:13,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 22:08:13,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2022-07-13 22:08:13,196 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-13 22:08:13,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 1181 transitions, 11129 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:13,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:13,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-13 22:08:13,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:24,672 INFO L129 PetriNetUnfolder]: 15448/29157 cut-off events. [2022-07-13 22:08:24,672 INFO L130 PetriNetUnfolder]: For 463788/463788 co-relation queries the response was YES. [2022-07-13 22:08:25,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142634 conditions, 29157 events. 15448/29157 cut-off events. For 463788/463788 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 252005 event pairs, 3045 based on Foata normal form. 1/26927 useless extension candidates. Maximal degree in co-relation 142472. Up to 11674 conditions per place. [2022-07-13 22:08:25,509 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 1061 selfloop transitions, 789 changer transitions 15/1988 dead transitions. [2022-07-13 22:08:25,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 1988 transitions, 25810 flow [2022-07-13 22:08:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-07-13 22:08:25,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-07-13 22:08:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 12469 transitions. [2022-07-13 22:08:25,521 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.686467738383616 [2022-07-13 22:08:25,521 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 12469 transitions. [2022-07-13 22:08:25,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 12469 transitions. [2022-07-13 22:08:25,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:25,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 12469 transitions. [2022-07-13 22:08:25,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 164.06578947368422) internal successors, (12469), 76 states have internal predecessors, (12469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:25,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 239.0) internal successors, (18403), 77 states have internal predecessors, (18403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:25,559 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 239.0) internal successors, (18403), 77 states have internal predecessors, (18403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:25,559 INFO L186 Difference]: Start difference. First operand has 592 places, 1181 transitions, 11129 flow. Second operand 76 states and 12469 transitions. [2022-07-13 22:08:25,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 1988 transitions, 25810 flow [2022-07-13 22:08:28,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 1988 transitions, 24293 flow, removed 719 selfloop flow, removed 6 redundant places. [2022-07-13 22:08:28,644 INFO L242 Difference]: Finished difference. Result has 696 places, 1623 transitions, 19531 flow [2022-07-13 22:08:28,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=10440, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=19531, PETRI_PLACES=696, PETRI_TRANSITIONS=1623} [2022-07-13 22:08:28,646 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 487 predicate places. [2022-07-13 22:08:28,646 INFO L495 AbstractCegarLoop]: Abstraction has has 696 places, 1623 transitions, 19531 flow [2022-07-13 22:08:28,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:28,647 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:28,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:28,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:08:28,648 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:28,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash -396270431, now seen corresponding path program 10 times [2022-07-13 22:08:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:28,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576638283] [2022-07-13 22:08:28,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:28,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:29,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:29,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576638283] [2022-07-13 22:08:29,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576638283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:29,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:29,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-13 22:08:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594398099] [2022-07-13 22:08:29,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:29,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 22:08:29,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 22:08:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2022-07-13 22:08:29,318 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-13 22:08:29,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 1623 transitions, 19531 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:29,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:29,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-13 22:08:29,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:42,968 INFO L129 PetriNetUnfolder]: 17119/32568 cut-off events. [2022-07-13 22:08:42,969 INFO L130 PetriNetUnfolder]: For 717998/717998 co-relation queries the response was YES. [2022-07-13 22:08:43,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168876 conditions, 32568 events. 17119/32568 cut-off events. For 717998/717998 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 287386 event pairs, 3368 based on Foata normal form. 1/30069 useless extension candidates. Maximal degree in co-relation 168672. Up to 12884 conditions per place. [2022-07-13 22:08:44,032 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 1368 selfloop transitions, 627 changer transitions 15/2133 dead transitions. [2022-07-13 22:08:44,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 2133 transitions, 29296 flow [2022-07-13 22:08:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-07-13 22:08:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-07-13 22:08:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 10466 transitions. [2022-07-13 22:08:44,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6842311715481172 [2022-07-13 22:08:44,038 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 10466 transitions. [2022-07-13 22:08:44,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 10466 transitions. [2022-07-13 22:08:44,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:44,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 10466 transitions. [2022-07-13 22:08:44,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 163.53125) internal successors, (10466), 64 states have internal predecessors, (10466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:44,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 239.0) internal successors, (15535), 65 states have internal predecessors, (15535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:44,058 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 239.0) internal successors, (15535), 65 states have internal predecessors, (15535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:44,058 INFO L186 Difference]: Start difference. First operand has 696 places, 1623 transitions, 19531 flow. Second operand 64 states and 10466 transitions. [2022-07-13 22:08:44,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 2133 transitions, 29296 flow [2022-07-13 22:08:49,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 752 places, 2133 transitions, 27344 flow, removed 970 selfloop flow, removed 5 redundant places. [2022-07-13 22:08:49,298 INFO L242 Difference]: Finished difference. Result has 785 places, 1788 transitions, 22079 flow [2022-07-13 22:08:49,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=17643, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=476, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=22079, PETRI_PLACES=785, PETRI_TRANSITIONS=1788} [2022-07-13 22:08:49,300 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 576 predicate places. [2022-07-13 22:08:49,300 INFO L495 AbstractCegarLoop]: Abstraction has has 785 places, 1788 transitions, 22079 flow [2022-07-13 22:08:49,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:49,301 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:49,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:49,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:08:49,301 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-13 22:08:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2040062053, now seen corresponding path program 11 times [2022-07-13 22:08:49,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555568922] [2022-07-13 22:08:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:49,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:49,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:49,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555568922] [2022-07-13 22:08:49,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555568922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:49,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:49,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-13 22:08:49,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033467145] [2022-07-13 22:08:49,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:49,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 22:08:49,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:49,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 22:08:49,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-07-13 22:08:49,767 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-13 22:08:49,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 785 places, 1788 transitions, 22079 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:08:49,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:49,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-13 22:08:49,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:09:04,480 INFO L129 PetriNetUnfolder]: 18256/34403 cut-off events. [2022-07-13 22:09:04,480 INFO L130 PetriNetUnfolder]: For 907557/907641 co-relation queries the response was YES. [2022-07-13 22:09:05,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192130 conditions, 34403 events. 18256/34403 cut-off events. For 907557/907641 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 305583 event pairs, 3759 based on Foata normal form. 24/31656 useless extension candidates. Maximal degree in co-relation 191890. Up to 14516 conditions per place.