./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-bakery-3.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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:26:20,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:26:20,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:26:20,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:26:20,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:26:20,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:26:20,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:26:20,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:26:20,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:26:20,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:26:20,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:26:20,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:26:20,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:26:20,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:26:20,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:26:20,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:26:20,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:26:20,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:26:20,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:26:20,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:26:20,978 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:26:20,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:26:20,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:26:20,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:26:20,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:26:20,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:26:20,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:26:20,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:26:20,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:26:20,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:26:20,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:26:21,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:26:21,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:26:21,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:26:21,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:26:21,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:26:21,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:26:21,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:26:21,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:26:21,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:26:21,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:26:21,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:26:21,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:26:21,052 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:26:21,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:26:21,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:26:21,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:26:21,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:26:21,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:26:21,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:26:21,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:26:21,054 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:26:21,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:26:21,055 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:26:21,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:26:21,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:26:21,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:26:21,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:26:21,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:26:21,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:26:21,056 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:26:21,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:26:21,057 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:26:21,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:26:21,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:26:21,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:26:21,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:26:21,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:26:21,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:26:21,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:26:21,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:26:21,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:26:21,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:26:21,059 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:26:21,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:26:21,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:26:21,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-07-12 10:26:21,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:26:21,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:26:21,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:26:21,425 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:26:21,425 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:26:21,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-07-12 10:26:21,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e05c271f/7d3f3dbb7ef74c078527a4cb768083ca/FLAG6bbc11fa1 [2022-07-12 10:26:21,868 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:26:21,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-07-12 10:26:21,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e05c271f/7d3f3dbb7ef74c078527a4cb768083ca/FLAG6bbc11fa1 [2022-07-12 10:26:21,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e05c271f/7d3f3dbb7ef74c078527a4cb768083ca [2022-07-12 10:26:21,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:26:21,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:26:21,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:26:21,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:26:21,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:26:21,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:26:21" (1/1) ... [2022-07-12 10:26:21,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3d7241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:21, skipping insertion in model container [2022-07-12 10:26:21,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:26:21" (1/1) ... [2022-07-12 10:26:21,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:26:21,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:26:22,092 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-bakery-3.wvr.c[5426,5439] [2022-07-12 10:26:22,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:26:22,098 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:26:22,131 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-bakery-3.wvr.c[5426,5439] [2022-07-12 10:26:22,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:26:22,146 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:26:22,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22 WrapperNode [2022-07-12 10:26:22,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:26:22,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:26:22,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:26:22,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:26:22,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22" (1/1) ... [2022-07-12 10:26:22,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22" (1/1) ... [2022-07-12 10:26:22,180 INFO L137 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 279 [2022-07-12 10:26:22,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:26:22,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:26:22,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:26:22,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:26:22,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22" (1/1) ... [2022-07-12 10:26:22,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22" (1/1) ... [2022-07-12 10:26:22,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22" (1/1) ... [2022-07-12 10:26:22,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22" (1/1) ... [2022-07-12 10:26:22,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22" (1/1) ... [2022-07-12 10:26:22,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22" (1/1) ... [2022-07-12 10:26:22,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22" (1/1) ... [2022-07-12 10:26:22,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:26:22,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:26:22,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:26:22,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:26:22,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22" (1/1) ... [2022-07-12 10:26:22,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:26:22,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:26:22,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:26:22,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:26:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:26:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:26:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:26:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:26:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:26:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:26:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:26:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:26:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:26:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:26:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:26:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:26:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:26:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:26:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:26:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:26:22,278 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:26:22,340 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:26:22,341 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:26:22,604 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:26:22,689 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:26:22,689 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:26:22,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:26:22 BoogieIcfgContainer [2022-07-12 10:26:22,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:26:22,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:26:22,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:26:22,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:26:22,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:26:21" (1/3) ... [2022-07-12 10:26:22,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6117419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:26:22, skipping insertion in model container [2022-07-12 10:26:22,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:22" (2/3) ... [2022-07-12 10:26:22,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6117419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:26:22, skipping insertion in model container [2022-07-12 10:26:22,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:26:22" (3/3) ... [2022-07-12 10:26:22,696 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-07-12 10:26:22,700 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:26:22,705 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:26:22,705 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:26:22,705 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:26:22,768 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:26:22,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 160 places, 152 transitions, 328 flow [2022-07-12 10:26:22,836 INFO L129 PetriNetUnfolder]: 2/149 cut-off events. [2022-07-12 10:26:22,836 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:26:22,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 2/149 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2022-07-12 10:26:22,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 152 transitions, 328 flow [2022-07-12 10:26:22,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 138 transitions, 294 flow [2022-07-12 10:26:22,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:26:22,853 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@107b1f08, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@295b70dc [2022-07-12 10:26:22,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:26:22,895 INFO L129 PetriNetUnfolder]: 2/137 cut-off events. [2022-07-12 10:26:22,895 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:26:22,895 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:22,896 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] [2022-07-12 10:26:22,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1657276246, now seen corresponding path program 1 times [2022-07-12 10:26:22,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:22,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008326824] [2022-07-12 10:26:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:22,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:23,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:23,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008326824] [2022-07-12 10:26:23,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008326824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:23,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:23,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:26:23,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229754558] [2022-07-12 10:26:23,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:23,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:26:23,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:23,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:26:23,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:26:23,479 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2022-07-12 10:26:23,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:23,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:23,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2022-07-12 10:26:23,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:24,780 INFO L129 PetriNetUnfolder]: 2149/5092 cut-off events. [2022-07-12 10:26:24,781 INFO L130 PetriNetUnfolder]: For 606/606 co-relation queries the response was YES. [2022-07-12 10:26:24,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9031 conditions, 5092 events. 2149/5092 cut-off events. For 606/606 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 40271 event pairs, 1260 based on Foata normal form. 7/5040 useless extension candidates. Maximal degree in co-relation 8682. Up to 1966 conditions per place. [2022-07-12 10:26:24,812 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 152 selfloop transitions, 21 changer transitions 23/281 dead transitions. [2022-07-12 10:26:24,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 281 transitions, 1026 flow [2022-07-12 10:26:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:26:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:26:24,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2262 transitions. [2022-07-12 10:26:24,829 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7086466165413534 [2022-07-12 10:26:24,830 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2262 transitions. [2022-07-12 10:26:24,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2262 transitions. [2022-07-12 10:26:24,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:24,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2262 transitions. [2022-07-12 10:26:24,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 107.71428571428571) internal successors, (2262), 21 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:24,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:24,853 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:24,854 INFO L186 Difference]: Start difference. First operand has 146 places, 138 transitions, 294 flow. Second operand 21 states and 2262 transitions. [2022-07-12 10:26:24,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 281 transitions, 1026 flow [2022-07-12 10:26:24,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 281 transitions, 978 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:26:24,866 INFO L242 Difference]: Finished difference. Result has 166 places, 150 transitions, 384 flow [2022-07-12 10:26:24,867 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=384, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2022-07-12 10:26:24,869 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 20 predicate places. [2022-07-12 10:26:24,870 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 384 flow [2022-07-12 10:26:24,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:24,871 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:24,871 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] [2022-07-12 10:26:24,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:26:24,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash -270808544, now seen corresponding path program 2 times [2022-07-12 10:26:24,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:24,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643122610] [2022-07-12 10:26:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:24,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:24,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:24,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643122610] [2022-07-12 10:26:24,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643122610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:24,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:24,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:26:24,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168816490] [2022-07-12 10:26:24,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:24,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:26:24,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:24,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:26:24,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:26:24,968 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2022-07-12 10:26:24,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:24,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:24,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2022-07-12 10:26:24,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:25,254 INFO L129 PetriNetUnfolder]: 1293/3256 cut-off events. [2022-07-12 10:26:25,254 INFO L130 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-07-12 10:26:25,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5944 conditions, 3256 events. 1293/3256 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 24724 event pairs, 840 based on Foata normal form. 68/3274 useless extension candidates. Maximal degree in co-relation 5915. Up to 1387 conditions per place. [2022-07-12 10:26:25,268 INFO L132 encePairwiseOnDemand]: 148/152 looper letters, 44 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2022-07-12 10:26:25,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 164 transitions, 506 flow [2022-07-12 10:26:25,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:26:25,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:26:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-07-12 10:26:25,270 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-12 10:26:25,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-07-12 10:26:25,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-07-12 10:26:25,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:25,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-07-12 10:26:25,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:25,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:25,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:25,273 INFO L186 Difference]: Start difference. First operand has 166 places, 150 transitions, 384 flow. Second operand 3 states and 399 transitions. [2022-07-12 10:26:25,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 164 transitions, 506 flow [2022-07-12 10:26:25,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 164 transitions, 496 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-12 10:26:25,277 INFO L242 Difference]: Finished difference. Result has 152 places, 150 transitions, 384 flow [2022-07-12 10:26:25,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=152, PETRI_TRANSITIONS=150} [2022-07-12 10:26:25,278 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 6 predicate places. [2022-07-12 10:26:25,278 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 384 flow [2022-07-12 10:26:25,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:25,279 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:25,279 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] [2022-07-12 10:26:25,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:26:25,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:25,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:25,280 INFO L85 PathProgramCache]: Analyzing trace with hash 38453412, now seen corresponding path program 3 times [2022-07-12 10:26:25,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:25,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416178909] [2022-07-12 10:26:25,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:25,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:25,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:25,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416178909] [2022-07-12 10:26:25,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416178909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:25,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:25,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:26:25,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896499721] [2022-07-12 10:26:25,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:25,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:26:25,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:25,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:26:25,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:26:25,520 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2022-07-12 10:26:25,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 150 transitions, 384 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:25,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:25,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2022-07-12 10:26:25,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:26,453 INFO L129 PetriNetUnfolder]: 2236/5811 cut-off events. [2022-07-12 10:26:26,454 INFO L130 PetriNetUnfolder]: For 845/845 co-relation queries the response was YES. [2022-07-12 10:26:26,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11273 conditions, 5811 events. 2236/5811 cut-off events. For 845/845 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 49859 event pairs, 1201 based on Foata normal form. 1/5766 useless extension candidates. Maximal degree in co-relation 8233. Up to 1905 conditions per place. [2022-07-12 10:26:26,486 INFO L132 encePairwiseOnDemand]: 136/152 looper letters, 168 selfloop transitions, 32 changer transitions 18/303 dead transitions. [2022-07-12 10:26:26,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 303 transitions, 1234 flow [2022-07-12 10:26:26,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:26:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:26:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1668 transitions. [2022-07-12 10:26:26,491 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7315789473684211 [2022-07-12 10:26:26,492 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1668 transitions. [2022-07-12 10:26:26,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1668 transitions. [2022-07-12 10:26:26,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:26,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1668 transitions. [2022-07-12 10:26:26,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 111.2) internal successors, (1668), 15 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:26,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:26,500 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:26,500 INFO L186 Difference]: Start difference. First operand has 152 places, 150 transitions, 384 flow. Second operand 15 states and 1668 transitions. [2022-07-12 10:26:26,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 303 transitions, 1234 flow [2022-07-12 10:26:26,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 303 transitions, 1230 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:26,510 INFO L242 Difference]: Finished difference. Result has 172 places, 171 transitions, 607 flow [2022-07-12 10:26:26,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=607, PETRI_PLACES=172, PETRI_TRANSITIONS=171} [2022-07-12 10:26:26,512 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 26 predicate places. [2022-07-12 10:26:26,512 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 171 transitions, 607 flow [2022-07-12 10:26:26,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:26,513 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:26,513 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:26,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:26:26,514 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 127245472, now seen corresponding path program 4 times [2022-07-12 10:26:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:26,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357824502] [2022-07-12 10:26:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:26,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:26,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357824502] [2022-07-12 10:26:26,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357824502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:26,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:26,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:26:26,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982246946] [2022-07-12 10:26:26,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:26,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:26:26,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:26:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:26:26,790 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-12 10:26:26,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 171 transitions, 607 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:26,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:26,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-12 10:26:26,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:27,919 INFO L129 PetriNetUnfolder]: 4602/10643 cut-off events. [2022-07-12 10:26:27,919 INFO L130 PetriNetUnfolder]: For 2038/2076 co-relation queries the response was YES. [2022-07-12 10:26:27,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21634 conditions, 10643 events. 4602/10643 cut-off events. For 2038/2076 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 98458 event pairs, 1115 based on Foata normal form. 151/10489 useless extension candidates. Maximal degree in co-relation 21548. Up to 3406 conditions per place. [2022-07-12 10:26:27,972 INFO L132 encePairwiseOnDemand]: 135/152 looper letters, 157 selfloop transitions, 42 changer transitions 8/334 dead transitions. [2022-07-12 10:26:27,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 334 transitions, 1381 flow [2022-07-12 10:26:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:26:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:26:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1758 transitions. [2022-07-12 10:26:27,975 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7710526315789473 [2022-07-12 10:26:27,975 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1758 transitions. [2022-07-12 10:26:27,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1758 transitions. [2022-07-12 10:26:27,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:27,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1758 transitions. [2022-07-12 10:26:27,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 117.2) internal successors, (1758), 15 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:27,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:27,982 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:27,982 INFO L186 Difference]: Start difference. First operand has 172 places, 171 transitions, 607 flow. Second operand 15 states and 1758 transitions. [2022-07-12 10:26:27,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 334 transitions, 1381 flow [2022-07-12 10:26:28,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 334 transitions, 1367 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-07-12 10:26:28,061 INFO L242 Difference]: Finished difference. Result has 188 places, 210 transitions, 888 flow [2022-07-12 10:26:28,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=888, PETRI_PLACES=188, PETRI_TRANSITIONS=210} [2022-07-12 10:26:28,062 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 42 predicate places. [2022-07-12 10:26:28,062 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 210 transitions, 888 flow [2022-07-12 10:26:28,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:28,063 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:28,063 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] [2022-07-12 10:26:28,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:26:28,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:28,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash 432067320, now seen corresponding path program 5 times [2022-07-12 10:26:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:28,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618158834] [2022-07-12 10:26:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:28,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:28,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:28,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618158834] [2022-07-12 10:26:28,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618158834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:28,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:28,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:26:28,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298023687] [2022-07-12 10:26:28,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:28,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:26:28,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:28,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:26:28,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:26:28,245 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2022-07-12 10:26:28,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 210 transitions, 888 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:28,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:28,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2022-07-12 10:26:28,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:30,109 INFO L129 PetriNetUnfolder]: 6121/13696 cut-off events. [2022-07-12 10:26:30,109 INFO L130 PetriNetUnfolder]: For 18955/18967 co-relation queries the response was YES. [2022-07-12 10:26:30,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40456 conditions, 13696 events. 6121/13696 cut-off events. For 18955/18967 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 127955 event pairs, 2601 based on Foata normal form. 8/13577 useless extension candidates. Maximal degree in co-relation 39541. Up to 4690 conditions per place. [2022-07-12 10:26:30,203 INFO L132 encePairwiseOnDemand]: 136/152 looper letters, 241 selfloop transitions, 37 changer transitions 11/389 dead transitions. [2022-07-12 10:26:30,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 389 transitions, 2344 flow [2022-07-12 10:26:30,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:26:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:26:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1666 transitions. [2022-07-12 10:26:30,207 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.730701754385965 [2022-07-12 10:26:30,207 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1666 transitions. [2022-07-12 10:26:30,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1666 transitions. [2022-07-12 10:26:30,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:30,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1666 transitions. [2022-07-12 10:26:30,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 111.06666666666666) internal successors, (1666), 15 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:30,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:30,213 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:30,213 INFO L186 Difference]: Start difference. First operand has 188 places, 210 transitions, 888 flow. Second operand 15 states and 1666 transitions. [2022-07-12 10:26:30,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 389 transitions, 2344 flow [2022-07-12 10:26:30,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 389 transitions, 2340 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:30,323 INFO L242 Difference]: Finished difference. Result has 206 places, 217 transitions, 1044 flow [2022-07-12 10:26:30,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1044, PETRI_PLACES=206, PETRI_TRANSITIONS=217} [2022-07-12 10:26:30,324 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 60 predicate places. [2022-07-12 10:26:30,324 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 217 transitions, 1044 flow [2022-07-12 10:26:30,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:30,324 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:30,325 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] [2022-07-12 10:26:30,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:26:30,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:30,326 INFO L85 PathProgramCache]: Analyzing trace with hash -171380418, now seen corresponding path program 6 times [2022-07-12 10:26:30,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:30,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318540184] [2022-07-12 10:26:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:30,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:30,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:30,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318540184] [2022-07-12 10:26:30,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318540184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:30,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:30,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:26:30,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047729458] [2022-07-12 10:26:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:30,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:26:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:30,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:26:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:26:30,381 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2022-07-12 10:26:30,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 217 transitions, 1044 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:30,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:30,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2022-07-12 10:26:30,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:31,488 INFO L129 PetriNetUnfolder]: 3503/9234 cut-off events. [2022-07-12 10:26:31,488 INFO L130 PetriNetUnfolder]: For 10797/10859 co-relation queries the response was YES. [2022-07-12 10:26:31,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26076 conditions, 9234 events. 3503/9234 cut-off events. For 10797/10859 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 88143 event pairs, 1929 based on Foata normal form. 240/9256 useless extension candidates. Maximal degree in co-relation 25980. Up to 3823 conditions per place. [2022-07-12 10:26:31,548 INFO L132 encePairwiseOnDemand]: 148/152 looper letters, 82 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2022-07-12 10:26:31,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 242 transitions, 1343 flow [2022-07-12 10:26:31,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:26:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:26:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-07-12 10:26:31,550 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-12 10:26:31,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-07-12 10:26:31,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-07-12 10:26:31,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:31,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-07-12 10:26:31,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:31,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:31,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:31,553 INFO L186 Difference]: Start difference. First operand has 206 places, 217 transitions, 1044 flow. Second operand 3 states and 399 transitions. [2022-07-12 10:26:31,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 242 transitions, 1343 flow [2022-07-12 10:26:31,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 242 transitions, 1286 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-07-12 10:26:31,613 INFO L242 Difference]: Finished difference. Result has 200 places, 214 transitions, 980 flow [2022-07-12 10:26:31,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=980, PETRI_PLACES=200, PETRI_TRANSITIONS=214} [2022-07-12 10:26:31,615 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 54 predicate places. [2022-07-12 10:26:31,615 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 214 transitions, 980 flow [2022-07-12 10:26:31,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:31,616 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:31,616 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] [2022-07-12 10:26:31,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:26:31,616 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:31,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:31,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1970926978, now seen corresponding path program 7 times [2022-07-12 10:26:31,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:31,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955859870] [2022-07-12 10:26:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:31,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:31,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:31,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955859870] [2022-07-12 10:26:31,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955859870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:31,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:31,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:26:31,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981904627] [2022-07-12 10:26:31,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:31,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:26:31,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:31,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:26:31,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:26:31,798 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-12 10:26:31,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 214 transitions, 980 flow. Second operand has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:31,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:31,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-12 10:26:31,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:33,168 INFO L129 PetriNetUnfolder]: 4448/11162 cut-off events. [2022-07-12 10:26:33,168 INFO L130 PetriNetUnfolder]: For 13290/13465 co-relation queries the response was YES. [2022-07-12 10:26:33,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32104 conditions, 11162 events. 4448/11162 cut-off events. For 13290/13465 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 109101 event pairs, 1501 based on Foata normal form. 42/10889 useless extension candidates. Maximal degree in co-relation 31784. Up to 6463 conditions per place. [2022-07-12 10:26:33,234 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 108 selfloop transitions, 11 changer transitions 25/278 dead transitions. [2022-07-12 10:26:33,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 278 transitions, 1575 flow [2022-07-12 10:26:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:26:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:26:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1026 transitions. [2022-07-12 10:26:33,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-07-12 10:26:33,237 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1026 transitions. [2022-07-12 10:26:33,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1026 transitions. [2022-07-12 10:26:33,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:33,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1026 transitions. [2022-07-12 10:26:33,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:33,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:33,241 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:33,241 INFO L186 Difference]: Start difference. First operand has 200 places, 214 transitions, 980 flow. Second operand 9 states and 1026 transitions. [2022-07-12 10:26:33,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 278 transitions, 1575 flow [2022-07-12 10:26:33,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 278 transitions, 1571 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:33,314 INFO L242 Difference]: Finished difference. Result has 211 places, 219 transitions, 1064 flow [2022-07-12 10:26:33,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1064, PETRI_PLACES=211, PETRI_TRANSITIONS=219} [2022-07-12 10:26:33,314 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 65 predicate places. [2022-07-12 10:26:33,315 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 219 transitions, 1064 flow [2022-07-12 10:26:33,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:33,315 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:33,315 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] [2022-07-12 10:26:33,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:26:33,316 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:33,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:33,316 INFO L85 PathProgramCache]: Analyzing trace with hash -791673240, now seen corresponding path program 8 times [2022-07-12 10:26:33,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:33,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220881466] [2022-07-12 10:26:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:33,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:33,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:33,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220881466] [2022-07-12 10:26:33,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220881466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:33,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:33,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:26:33,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22113511] [2022-07-12 10:26:33,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:33,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:26:33,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:33,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:26:33,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:26:33,508 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-12 10:26:33,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 219 transitions, 1064 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:33,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:33,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-12 10:26:33,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:34,968 INFO L129 PetriNetUnfolder]: 4687/11972 cut-off events. [2022-07-12 10:26:34,968 INFO L130 PetriNetUnfolder]: For 25398/25648 co-relation queries the response was YES. [2022-07-12 10:26:35,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38434 conditions, 11972 events. 4687/11972 cut-off events. For 25398/25648 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 118985 event pairs, 1682 based on Foata normal form. 80/11706 useless extension candidates. Maximal degree in co-relation 38075. Up to 6685 conditions per place. [2022-07-12 10:26:35,160 INFO L132 encePairwiseOnDemand]: 139/152 looper letters, 123 selfloop transitions, 45 changer transitions 0/302 dead transitions. [2022-07-12 10:26:35,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 302 transitions, 1927 flow [2022-07-12 10:26:35,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:26:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:26:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1042 transitions. [2022-07-12 10:26:35,162 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7616959064327485 [2022-07-12 10:26:35,162 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1042 transitions. [2022-07-12 10:26:35,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1042 transitions. [2022-07-12 10:26:35,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:35,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1042 transitions. [2022-07-12 10:26:35,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.77777777777777) internal successors, (1042), 9 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:35,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:35,167 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:35,167 INFO L186 Difference]: Start difference. First operand has 211 places, 219 transitions, 1064 flow. Second operand 9 states and 1042 transitions. [2022-07-12 10:26:35,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 302 transitions, 1927 flow [2022-07-12 10:26:35,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 302 transitions, 1871 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-07-12 10:26:35,273 INFO L242 Difference]: Finished difference. Result has 216 places, 255 transitions, 1520 flow [2022-07-12 10:26:35,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1520, PETRI_PLACES=216, PETRI_TRANSITIONS=255} [2022-07-12 10:26:35,275 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 70 predicate places. [2022-07-12 10:26:35,276 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 255 transitions, 1520 flow [2022-07-12 10:26:35,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:35,276 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:35,276 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] [2022-07-12 10:26:35,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:26:35,277 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:35,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:35,277 INFO L85 PathProgramCache]: Analyzing trace with hash -265574646, now seen corresponding path program 9 times [2022-07-12 10:26:35,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:35,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646962223] [2022-07-12 10:26:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:35,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:35,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:35,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646962223] [2022-07-12 10:26:35,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646962223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:35,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:35,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:26:35,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585246172] [2022-07-12 10:26:35,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:35,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:26:35,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:35,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:26:35,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:26:35,511 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-12 10:26:35,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 255 transitions, 1520 flow. Second operand has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:35,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:35,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-12 10:26:35,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:37,354 INFO L129 PetriNetUnfolder]: 5212/13168 cut-off events. [2022-07-12 10:26:37,354 INFO L130 PetriNetUnfolder]: For 30665/31079 co-relation queries the response was YES. [2022-07-12 10:26:37,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43603 conditions, 13168 events. 5212/13168 cut-off events. For 30665/31079 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 132839 event pairs, 2958 based on Foata normal form. 60/12811 useless extension candidates. Maximal degree in co-relation 43226. Up to 7618 conditions per place. [2022-07-12 10:26:37,465 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 167 selfloop transitions, 48 changer transitions 33/382 dead transitions. [2022-07-12 10:26:37,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 382 transitions, 2795 flow [2022-07-12 10:26:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:26:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:26:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1499 transitions. [2022-07-12 10:26:37,468 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7586032388663968 [2022-07-12 10:26:37,468 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1499 transitions. [2022-07-12 10:26:37,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1499 transitions. [2022-07-12 10:26:37,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:37,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1499 transitions. [2022-07-12 10:26:37,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.3076923076923) internal successors, (1499), 13 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:37,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 152.0) internal successors, (2128), 14 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:37,474 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 152.0) internal successors, (2128), 14 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:37,474 INFO L186 Difference]: Start difference. First operand has 216 places, 255 transitions, 1520 flow. Second operand 13 states and 1499 transitions. [2022-07-12 10:26:37,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 382 transitions, 2795 flow [2022-07-12 10:26:37,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 382 transitions, 2725 flow, removed 33 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:37,718 INFO L242 Difference]: Finished difference. Result has 235 places, 286 transitions, 1969 flow [2022-07-12 10:26:37,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1969, PETRI_PLACES=235, PETRI_TRANSITIONS=286} [2022-07-12 10:26:37,719 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 89 predicate places. [2022-07-12 10:26:37,719 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 286 transitions, 1969 flow [2022-07-12 10:26:37,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:37,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:37,720 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:37,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:26:37,721 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:37,721 INFO L85 PathProgramCache]: Analyzing trace with hash 720952562, now seen corresponding path program 10 times [2022-07-12 10:26:37,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:37,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796887575] [2022-07-12 10:26:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:37,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:37,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:37,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796887575] [2022-07-12 10:26:37,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796887575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:37,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:37,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:26:37,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942934579] [2022-07-12 10:26:37,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:37,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:26:37,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:37,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:26:37,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:26:37,956 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-12 10:26:37,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 286 transitions, 1969 flow. Second operand has 15 states, 15 states have (on average 105.93333333333334) internal successors, (1589), 15 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:37,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:37,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-12 10:26:37,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:42,439 INFO L129 PetriNetUnfolder]: 11750/27633 cut-off events. [2022-07-12 10:26:42,439 INFO L130 PetriNetUnfolder]: For 92125/92883 co-relation queries the response was YES. [2022-07-12 10:26:42,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98486 conditions, 27633 events. 11750/27633 cut-off events. For 92125/92883 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 300527 event pairs, 2570 based on Foata normal form. 675/27637 useless extension candidates. Maximal degree in co-relation 97654. Up to 5636 conditions per place. [2022-07-12 10:26:42,719 INFO L132 encePairwiseOnDemand]: 131/152 looper letters, 344 selfloop transitions, 221 changer transitions 35/734 dead transitions. [2022-07-12 10:26:42,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 734 transitions, 6120 flow [2022-07-12 10:26:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 10:26:42,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-12 10:26:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2999 transitions. [2022-07-12 10:26:42,724 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7892105263157895 [2022-07-12 10:26:42,724 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2999 transitions. [2022-07-12 10:26:42,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2999 transitions. [2022-07-12 10:26:42,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:42,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2999 transitions. [2022-07-12 10:26:42,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 119.96) internal successors, (2999), 25 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:42,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:42,736 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:42,736 INFO L186 Difference]: Start difference. First operand has 235 places, 286 transitions, 1969 flow. Second operand 25 states and 2999 transitions. [2022-07-12 10:26:42,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 734 transitions, 6120 flow [2022-07-12 10:26:43,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 734 transitions, 5914 flow, removed 101 selfloop flow, removed 5 redundant places. [2022-07-12 10:26:43,282 INFO L242 Difference]: Finished difference. Result has 272 places, 456 transitions, 4403 flow [2022-07-12 10:26:43,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4403, PETRI_PLACES=272, PETRI_TRANSITIONS=456} [2022-07-12 10:26:43,283 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 126 predicate places. [2022-07-12 10:26:43,283 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 456 transitions, 4403 flow [2022-07-12 10:26:43,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 105.93333333333334) internal successors, (1589), 15 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:43,284 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:43,285 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:43,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:26:43,285 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:43,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1634048496, now seen corresponding path program 11 times [2022-07-12 10:26:43,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:43,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337558851] [2022-07-12 10:26:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:43,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:43,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:43,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337558851] [2022-07-12 10:26:43,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337558851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:43,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:43,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:26:43,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081376162] [2022-07-12 10:26:43,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:43,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:26:43,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:43,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:26:43,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:26:43,433 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-12 10:26:43,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 456 transitions, 4403 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:43,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:43,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-12 10:26:43,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:48,357 INFO L129 PetriNetUnfolder]: 11564/28030 cut-off events. [2022-07-12 10:26:48,357 INFO L130 PetriNetUnfolder]: For 228079/229884 co-relation queries the response was YES. [2022-07-12 10:26:48,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132429 conditions, 28030 events. 11564/28030 cut-off events. For 228079/229884 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 311777 event pairs, 6316 based on Foata normal form. 152/27522 useless extension candidates. Maximal degree in co-relation 131568. Up to 17780 conditions per place. [2022-07-12 10:26:48,794 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 304 selfloop transitions, 69 changer transitions 29/536 dead transitions. [2022-07-12 10:26:48,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 536 transitions, 5947 flow [2022-07-12 10:26:48,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:26:48,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:26:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1267 transitions. [2022-07-12 10:26:48,796 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7577751196172249 [2022-07-12 10:26:48,797 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1267 transitions. [2022-07-12 10:26:48,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1267 transitions. [2022-07-12 10:26:48,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:48,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1267 transitions. [2022-07-12 10:26:48,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.18181818181819) internal successors, (1267), 11 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:48,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:48,922 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:48,922 INFO L186 Difference]: Start difference. First operand has 272 places, 456 transitions, 4403 flow. Second operand 11 states and 1267 transitions. [2022-07-12 10:26:48,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 536 transitions, 5947 flow [2022-07-12 10:26:50,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 536 transitions, 5574 flow, removed 180 selfloop flow, removed 3 redundant places. [2022-07-12 10:26:50,373 INFO L242 Difference]: Finished difference. Result has 282 places, 455 transitions, 4181 flow [2022-07-12 10:26:50,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4181, PETRI_PLACES=282, PETRI_TRANSITIONS=455} [2022-07-12 10:26:50,374 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 136 predicate places. [2022-07-12 10:26:50,374 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 455 transitions, 4181 flow [2022-07-12 10:26:50,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,374 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:50,374 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] [2022-07-12 10:26:50,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:26:50,375 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:50,375 INFO L85 PathProgramCache]: Analyzing trace with hash -968586136, now seen corresponding path program 12 times [2022-07-12 10:26:50,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:50,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67108905] [2022-07-12 10:26:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:50,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:50,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:50,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67108905] [2022-07-12 10:26:50,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67108905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:50,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:50,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:26:50,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505800104] [2022-07-12 10:26:50,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:50,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:26:50,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:50,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:26:50,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:26:50,556 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-12 10:26:50,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 455 transitions, 4181 flow. Second operand has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:50,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-12 10:26:50,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:56,108 INFO L129 PetriNetUnfolder]: 12060/30022 cut-off events. [2022-07-12 10:26:56,108 INFO L130 PetriNetUnfolder]: For 239066/240600 co-relation queries the response was YES. [2022-07-12 10:26:56,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138037 conditions, 30022 events. 12060/30022 cut-off events. For 239066/240600 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 342170 event pairs, 4885 based on Foata normal form. 283/29760 useless extension candidates. Maximal degree in co-relation 136892. Up to 13836 conditions per place. [2022-07-12 10:26:56,562 INFO L132 encePairwiseOnDemand]: 134/152 looper letters, 415 selfloop transitions, 122 changer transitions 9/680 dead transitions. [2022-07-12 10:26:56,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 680 transitions, 7756 flow [2022-07-12 10:26:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:26:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:26:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1390 transitions. [2022-07-12 10:26:56,564 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620614035087719 [2022-07-12 10:26:56,564 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1390 transitions. [2022-07-12 10:26:56,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1390 transitions. [2022-07-12 10:26:56,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:56,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1390 transitions. [2022-07-12 10:26:56,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.83333333333333) internal successors, (1390), 12 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:56,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:56,568 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:56,568 INFO L186 Difference]: Start difference. First operand has 282 places, 455 transitions, 4181 flow. Second operand 12 states and 1390 transitions. [2022-07-12 10:26:56,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 680 transitions, 7756 flow [2022-07-12 10:26:57,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 680 transitions, 7534 flow, removed 23 selfloop flow, removed 10 redundant places. [2022-07-12 10:26:57,692 INFO L242 Difference]: Finished difference. Result has 289 places, 531 transitions, 5515 flow [2022-07-12 10:26:57,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=4021, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5515, PETRI_PLACES=289, PETRI_TRANSITIONS=531} [2022-07-12 10:26:57,693 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 143 predicate places. [2022-07-12 10:26:57,693 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 531 transitions, 5515 flow [2022-07-12 10:26:57,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:57,694 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:57,694 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] [2022-07-12 10:26:57,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:26:57,694 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash 832620048, now seen corresponding path program 13 times [2022-07-12 10:26:57,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:57,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845501883] [2022-07-12 10:26:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:57,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:57,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:57,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845501883] [2022-07-12 10:26:57,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845501883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:57,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:57,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:26:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492897582] [2022-07-12 10:26:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:57,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:26:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:26:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:26:57,919 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-12 10:26:57,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 531 transitions, 5515 flow. Second operand has 15 states, 15 states have (on average 105.93333333333334) internal successors, (1589), 15 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:57,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:57,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-12 10:26:57,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:06,737 INFO L129 PetriNetUnfolder]: 16803/43939 cut-off events. [2022-07-12 10:27:06,737 INFO L130 PetriNetUnfolder]: For 397386/401045 co-relation queries the response was YES. [2022-07-12 10:27:07,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200792 conditions, 43939 events. 16803/43939 cut-off events. For 397386/401045 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 549645 event pairs, 4328 based on Foata normal form. 1180/44290 useless extension candidates. Maximal degree in co-relation 199114. Up to 6885 conditions per place. [2022-07-12 10:27:07,513 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 442 selfloop transitions, 338 changer transitions 26/940 dead transitions. [2022-07-12 10:27:07,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 940 transitions, 12246 flow [2022-07-12 10:27:07,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:27:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:27:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2096 transitions. [2022-07-12 10:27:07,516 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660818713450293 [2022-07-12 10:27:07,516 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2096 transitions. [2022-07-12 10:27:07,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2096 transitions. [2022-07-12 10:27:07,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:07,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2096 transitions. [2022-07-12 10:27:07,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 116.44444444444444) internal successors, (2096), 18 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:07,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:07,521 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:07,521 INFO L186 Difference]: Start difference. First operand has 289 places, 531 transitions, 5515 flow. Second operand 18 states and 2096 transitions. [2022-07-12 10:27:07,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 940 transitions, 12246 flow [2022-07-12 10:27:09,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 940 transitions, 12128 flow, removed 57 selfloop flow, removed 3 redundant places. [2022-07-12 10:27:09,639 INFO L242 Difference]: Finished difference. Result has 313 places, 692 transitions, 8982 flow [2022-07-12 10:27:09,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5461, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8982, PETRI_PLACES=313, PETRI_TRANSITIONS=692} [2022-07-12 10:27:09,640 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 167 predicate places. [2022-07-12 10:27:09,641 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 692 transitions, 8982 flow [2022-07-12 10:27:09,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 105.93333333333334) internal successors, (1589), 15 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:09,641 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:09,641 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] [2022-07-12 10:27:09,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:27:09,642 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:09,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash 280019092, now seen corresponding path program 14 times [2022-07-12 10:27:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:09,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190362805] [2022-07-12 10:27:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:09,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:09,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190362805] [2022-07-12 10:27:09,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190362805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:09,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:09,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:27:09,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138568547] [2022-07-12 10:27:09,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:09,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:27:09,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:09,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:27:09,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:27:09,826 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-07-12 10:27:09,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 692 transitions, 8982 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:09,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:09,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-07-12 10:27:09,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand