./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-simpl-str-symm.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 cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:05:35,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:05:35,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:05:35,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:05:35,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:05:35,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:05:35,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:05:35,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:05:35,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:05:35,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:05:35,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:05:35,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:05:35,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:05:35,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:05:35,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:05:35,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:05:35,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:05:35,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:05:35,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:05:35,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:05:35,355 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:05:35,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:05:35,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:05:35,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:05:35,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:05:35,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:05:35,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:05:35,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:05:35,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:05:35,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:05:35,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:05:35,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:05:35,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:05:35,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:05:35,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:05:35,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:05:35,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:05:35,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:05:35,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:05:35,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:05:35,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:05:35,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:05:35,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:05:35,395 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:05:35,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:05:35,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:05:35,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:05:35,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:05:35,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:05:35,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:05:35,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:05:35,398 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:05:35,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:05:35,399 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:05:35,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:05:35,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:05:35,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:05:35,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:05:35,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:05:35,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:05:35,400 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:05:35,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:05:35,400 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:05:35,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:05:35,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:05:35,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:05:35,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:05:35,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:05:35,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:05:35,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:05:35,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:05:35,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:05:35,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:05:35,402 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:05:35,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:05:35,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:05:35,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c [2022-07-13 22:05:35,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:05:35,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:05:35,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:05:35,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:05:35,568 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:05:35,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-07-13 22:05:35,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3f2870e/bde60cf922614fb68ecb359218829a3b/FLAG30195b92c [2022-07-13 22:05:35,975 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:05:35,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-07-13 22:05:35,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3f2870e/bde60cf922614fb68ecb359218829a3b/FLAG30195b92c [2022-07-13 22:05:35,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3f2870e/bde60cf922614fb68ecb359218829a3b [2022-07-13 22:05:35,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:05:35,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:05:35,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:05:35,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:05:35,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:05:35,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:05:35" (1/1) ... [2022-07-13 22:05:35,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f6db2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:35, skipping insertion in model container [2022-07-13 22:05:35,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:05:35" (1/1) ... [2022-07-13 22:05:36,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:05:36,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:05:36,186 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-07-13 22:05:36,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:05:36,194 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:05:36,207 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-07-13 22:05:36,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:05:36,218 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:05:36,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36 WrapperNode [2022-07-13 22:05:36,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:05:36,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:05:36,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:05:36,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:05:36,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36" (1/1) ... [2022-07-13 22:05:36,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36" (1/1) ... [2022-07-13 22:05:36,248 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 130 [2022-07-13 22:05:36,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:05:36,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:05:36,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:05:36,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:05:36,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36" (1/1) ... [2022-07-13 22:05:36,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36" (1/1) ... [2022-07-13 22:05:36,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36" (1/1) ... [2022-07-13 22:05:36,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36" (1/1) ... [2022-07-13 22:05:36,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36" (1/1) ... [2022-07-13 22:05:36,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36" (1/1) ... [2022-07-13 22:05:36,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36" (1/1) ... [2022-07-13 22:05:36,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:05:36,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:05:36,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:05:36,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:05:36,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36" (1/1) ... [2022-07-13 22:05:36,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:05:36,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:36,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:05:36,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:05:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:05:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:05:36,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:05:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:05:36,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:05:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:05:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:05:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:05:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:05:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:05:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:05:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:05:36,358 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:05:36,480 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:05:36,481 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:05:36,673 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:05:36,680 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:05:36,680 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:05:36,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:05:36 BoogieIcfgContainer [2022-07-13 22:05:36,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:05:36,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:05:36,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:05:36,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:05:36,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:05:35" (1/3) ... [2022-07-13 22:05:36,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:05:36, skipping insertion in model container [2022-07-13 22:05:36,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:36" (2/3) ... [2022-07-13 22:05:36,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:05:36, skipping insertion in model container [2022-07-13 22:05:36,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:05:36" (3/3) ... [2022-07-13 22:05:36,688 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2022-07-13 22:05:36,691 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:05:36,697 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:05:36,697 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:05:36,698 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:05:36,745 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:05:36,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 176 transitions, 368 flow [2022-07-13 22:05:36,819 INFO L129 PetriNetUnfolder]: 13/174 cut-off events. [2022-07-13 22:05:36,820 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:05:36,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 13/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 288 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-07-13 22:05:36,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 176 transitions, 368 flow [2022-07-13 22:05:36,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 165 transitions, 342 flow [2022-07-13 22:05:36,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:05:36,843 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@314ce7f3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@77b60fdd [2022-07-13 22:05:36,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:05:36,892 INFO L129 PetriNetUnfolder]: 13/164 cut-off events. [2022-07-13 22:05:36,892 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:05:36,893 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:36,893 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] [2022-07-13 22:05:36,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1136902299, now seen corresponding path program 1 times [2022-07-13 22:05:36,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:36,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710783627] [2022-07-13 22:05:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:36,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:37,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:37,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710783627] [2022-07-13 22:05:37,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710783627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:37,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:37,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:37,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426158572] [2022-07-13 22:05:37,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:37,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:37,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:37,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:37,116 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-13 22:05:37,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 165 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:37,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-13 22:05:37,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:37,213 INFO L129 PetriNetUnfolder]: 27/458 cut-off events. [2022-07-13 22:05:37,214 INFO L130 PetriNetUnfolder]: For 44/45 co-relation queries the response was YES. [2022-07-13 22:05:37,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 458 events. 27/458 cut-off events. For 44/45 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2355 event pairs, 7 based on Foata normal form. 20/433 useless extension candidates. Maximal degree in co-relation 339. Up to 26 conditions per place. [2022-07-13 22:05:37,218 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 15 selfloop transitions, 3 changer transitions 3/164 dead transitions. [2022-07-13 22:05:37,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 164 transitions, 385 flow [2022-07-13 22:05:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:37,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2022-07-13 22:05:37,236 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9450757575757576 [2022-07-13 22:05:37,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2022-07-13 22:05:37,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2022-07-13 22:05:37,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:37,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2022-07-13 22:05:37,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,259 INFO L186 Difference]: Start difference. First operand has 159 places, 165 transitions, 342 flow. Second operand 3 states and 499 transitions. [2022-07-13 22:05:37,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 164 transitions, 385 flow [2022-07-13 22:05:37,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 164 transitions, 371 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:37,266 INFO L242 Difference]: Finished difference. Result has 159 places, 158 transitions, 344 flow [2022-07-13 22:05:37,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=159, PETRI_TRANSITIONS=158} [2022-07-13 22:05:37,271 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 0 predicate places. [2022-07-13 22:05:37,272 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 158 transitions, 344 flow [2022-07-13 22:05:37,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,273 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:37,273 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] [2022-07-13 22:05:37,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:05:37,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:37,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:37,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1762878269, now seen corresponding path program 1 times [2022-07-13 22:05:37,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:37,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641772107] [2022-07-13 22:05:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:37,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:37,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:37,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641772107] [2022-07-13 22:05:37,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641772107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:37,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:37,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:37,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109716801] [2022-07-13 22:05:37,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:37,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:37,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:37,545 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:37,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 158 transitions, 344 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:37,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:37,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:37,945 INFO L129 PetriNetUnfolder]: 187/880 cut-off events. [2022-07-13 22:05:37,945 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-07-13 22:05:37,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 880 events. 187/880 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5666 event pairs, 66 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 873. Up to 259 conditions per place. [2022-07-13 22:05:37,953 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 82 selfloop transitions, 5 changer transitions 34/247 dead transitions. [2022-07-13 22:05:37,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 247 transitions, 777 flow [2022-07-13 22:05:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3314 transitions. [2022-07-13 22:05:37,961 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7845643939393939 [2022-07-13 22:05:37,961 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3314 transitions. [2022-07-13 22:05:37,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3314 transitions. [2022-07-13 22:05:37,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:37,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3314 transitions. [2022-07-13 22:05:37,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 138.08333333333334) internal successors, (3314), 24 states have internal predecessors, (3314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,977 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,977 INFO L186 Difference]: Start difference. First operand has 159 places, 158 transitions, 344 flow. Second operand 24 states and 3314 transitions. [2022-07-13 22:05:37,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 247 transitions, 777 flow [2022-07-13 22:05:37,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 247 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:38,025 INFO L242 Difference]: Finished difference. Result has 200 places, 162 transitions, 432 flow [2022-07-13 22:05:38,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=432, PETRI_PLACES=200, PETRI_TRANSITIONS=162} [2022-07-13 22:05:38,026 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 41 predicate places. [2022-07-13 22:05:38,026 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 162 transitions, 432 flow [2022-07-13 22:05:38,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,028 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:38,028 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] [2022-07-13 22:05:38,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:05:38,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:38,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:38,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1405916061, now seen corresponding path program 1 times [2022-07-13 22:05:38,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:38,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821869247] [2022-07-13 22:05:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:38,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:38,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821869247] [2022-07-13 22:05:38,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821869247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:38,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:38,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:38,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66490648] [2022-07-13 22:05:38,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:38,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:38,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:38,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:38,118 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-13 22:05:38,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 162 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:38,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-13 22:05:38,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:38,173 INFO L129 PetriNetUnfolder]: 39/488 cut-off events. [2022-07-13 22:05:38,174 INFO L130 PetriNetUnfolder]: For 524/541 co-relation queries the response was YES. [2022-07-13 22:05:38,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 488 events. 39/488 cut-off events. For 524/541 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2284 event pairs, 26 based on Foata normal form. 1/454 useless extension candidates. Maximal degree in co-relation 830. Up to 27 conditions per place. [2022-07-13 22:05:38,177 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 16 selfloop transitions, 5 changer transitions 0/168 dead transitions. [2022-07-13 22:05:38,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 168 transitions, 495 flow [2022-07-13 22:05:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:38,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-13 22:05:38,181 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-13 22:05:38,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-13 22:05:38,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-13 22:05:38,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:38,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-13 22:05:38,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,186 INFO L186 Difference]: Start difference. First operand has 200 places, 162 transitions, 432 flow. Second operand 3 states and 489 transitions. [2022-07-13 22:05:38,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 168 transitions, 495 flow [2022-07-13 22:05:38,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 168 transitions, 476 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-07-13 22:05:38,199 INFO L242 Difference]: Finished difference. Result has 177 places, 165 transitions, 457 flow [2022-07-13 22:05:38,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=457, PETRI_PLACES=177, PETRI_TRANSITIONS=165} [2022-07-13 22:05:38,201 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 18 predicate places. [2022-07-13 22:05:38,201 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 165 transitions, 457 flow [2022-07-13 22:05:38,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,202 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:38,202 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] [2022-07-13 22:05:38,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:05:38,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:38,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:38,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1946352631, now seen corresponding path program 1 times [2022-07-13 22:05:38,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:38,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069525742] [2022-07-13 22:05:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:38,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:38,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:38,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069525742] [2022-07-13 22:05:38,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069525742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:38,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:38,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:38,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417544451] [2022-07-13 22:05:38,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:38,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:38,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:38,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:38,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:38,283 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-13 22:05:38,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 165 transitions, 457 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:38,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-13 22:05:38,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:38,365 INFO L129 PetriNetUnfolder]: 63/751 cut-off events. [2022-07-13 22:05:38,365 INFO L130 PetriNetUnfolder]: For 727/768 co-relation queries the response was YES. [2022-07-13 22:05:38,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 751 events. 63/751 cut-off events. For 727/768 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4482 event pairs, 39 based on Foata normal form. 9/723 useless extension candidates. Maximal degree in co-relation 1079. Up to 58 conditions per place. [2022-07-13 22:05:38,370 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 13 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-07-13 22:05:38,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 171 transitions, 508 flow [2022-07-13 22:05:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-13 22:05:38,372 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-13 22:05:38,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-13 22:05:38,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-13 22:05:38,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:38,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-13 22:05:38,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,377 INFO L186 Difference]: Start difference. First operand has 177 places, 165 transitions, 457 flow. Second operand 3 states and 489 transitions. [2022-07-13 22:05:38,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 171 transitions, 508 flow [2022-07-13 22:05:38,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 171 transitions, 492 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:38,382 INFO L242 Difference]: Finished difference. Result has 179 places, 168 transitions, 479 flow [2022-07-13 22:05:38,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=479, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-07-13 22:05:38,384 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 20 predicate places. [2022-07-13 22:05:38,384 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 479 flow [2022-07-13 22:05:38,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,385 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:38,389 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] [2022-07-13 22:05:38,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:05:38,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:38,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1833288823, now seen corresponding path program 2 times [2022-07-13 22:05:38,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:38,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721194055] [2022-07-13 22:05:38,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:38,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:38,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:38,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721194055] [2022-07-13 22:05:38,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721194055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:38,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:38,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:38,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842119786] [2022-07-13 22:05:38,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:38,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:38,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:38,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:38,442 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-13 22:05:38,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 479 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:38,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-13 22:05:38,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:38,500 INFO L129 PetriNetUnfolder]: 38/588 cut-off events. [2022-07-13 22:05:38,500 INFO L130 PetriNetUnfolder]: For 432/445 co-relation queries the response was YES. [2022-07-13 22:05:38,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 588 events. 38/588 cut-off events. For 432/445 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3256 event pairs, 28 based on Foata normal form. 8/572 useless extension candidates. Maximal degree in co-relation 899. Up to 36 conditions per place. [2022-07-13 22:05:38,503 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 18 selfloop transitions, 3 changer transitions 2/174 dead transitions. [2022-07-13 22:05:38,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 174 transitions, 542 flow [2022-07-13 22:05:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:38,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-13 22:05:38,505 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-13 22:05:38,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-13 22:05:38,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-13 22:05:38,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:38,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-13 22:05:38,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,508 INFO L186 Difference]: Start difference. First operand has 179 places, 168 transitions, 479 flow. Second operand 3 states and 489 transitions. [2022-07-13 22:05:38,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 174 transitions, 542 flow [2022-07-13 22:05:38,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 532 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:38,514 INFO L242 Difference]: Finished difference. Result has 181 places, 169 transitions, 501 flow [2022-07-13 22:05:38,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=181, PETRI_TRANSITIONS=169} [2022-07-13 22:05:38,516 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 22 predicate places. [2022-07-13 22:05:38,516 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 169 transitions, 501 flow [2022-07-13 22:05:38,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,517 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:38,517 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] [2022-07-13 22:05:38,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:05:38,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:38,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1107231657, now seen corresponding path program 1 times [2022-07-13 22:05:38,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:38,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279410081] [2022-07-13 22:05:38,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:38,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:38,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:38,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279410081] [2022-07-13 22:05:38,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279410081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:38,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:38,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:38,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581199002] [2022-07-13 22:05:38,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:38,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:38,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:38,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:38,649 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:38,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 169 transitions, 501 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:38,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:38,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:38,899 INFO L129 PetriNetUnfolder]: 131/828 cut-off events. [2022-07-13 22:05:38,899 INFO L130 PetriNetUnfolder]: For 694/729 co-relation queries the response was YES. [2022-07-13 22:05:38,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 828 events. 131/828 cut-off events. For 694/729 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5002 event pairs, 49 based on Foata normal form. 10/805 useless extension candidates. Maximal degree in co-relation 1487. Up to 176 conditions per place. [2022-07-13 22:05:38,904 INFO L132 encePairwiseOnDemand]: 161/176 looper letters, 38 selfloop transitions, 7 changer transitions 51/226 dead transitions. [2022-07-13 22:05:38,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 226 transitions, 918 flow [2022-07-13 22:05:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:05:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:05:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1950 transitions. [2022-07-13 22:05:38,907 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7913961038961039 [2022-07-13 22:05:38,908 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1950 transitions. [2022-07-13 22:05:38,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1950 transitions. [2022-07-13 22:05:38,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:38,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1950 transitions. [2022-07-13 22:05:38,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 139.28571428571428) internal successors, (1950), 14 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 176.0) internal successors, (2640), 15 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,916 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 176.0) internal successors, (2640), 15 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,916 INFO L186 Difference]: Start difference. First operand has 181 places, 169 transitions, 501 flow. Second operand 14 states and 1950 transitions. [2022-07-13 22:05:38,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 226 transitions, 918 flow [2022-07-13 22:05:38,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 226 transitions, 909 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:38,923 INFO L242 Difference]: Finished difference. Result has 202 places, 166 transitions, 546 flow [2022-07-13 22:05:38,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=546, PETRI_PLACES=202, PETRI_TRANSITIONS=166} [2022-07-13 22:05:38,925 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 43 predicate places. [2022-07-13 22:05:38,925 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 166 transitions, 546 flow [2022-07-13 22:05:38,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,926 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:38,926 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] [2022-07-13 22:05:38,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:05:38,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:38,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:38,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1346623849, now seen corresponding path program 1 times [2022-07-13 22:05:38,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:38,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175839291] [2022-07-13 22:05:38,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:38,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:39,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:39,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:39,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175839291] [2022-07-13 22:05:39,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175839291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:39,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:39,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:39,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842313884] [2022-07-13 22:05:39,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:39,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:39,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:39,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:39,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:39,073 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:39,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 166 transitions, 546 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:39,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:39,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:39,335 INFO L129 PetriNetUnfolder]: 127/800 cut-off events. [2022-07-13 22:05:39,335 INFO L130 PetriNetUnfolder]: For 2137/2157 co-relation queries the response was YES. [2022-07-13 22:05:39,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 800 events. 127/800 cut-off events. For 2137/2157 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4607 event pairs, 69 based on Foata normal form. 9/778 useless extension candidates. Maximal degree in co-relation 2211. Up to 229 conditions per place. [2022-07-13 22:05:39,341 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 14 changer transitions 25/222 dead transitions. [2022-07-13 22:05:39,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 222 transitions, 1163 flow [2022-07-13 22:05:39,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:39,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2212 transitions. [2022-07-13 22:05:39,345 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7855113636363636 [2022-07-13 22:05:39,346 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2212 transitions. [2022-07-13 22:05:39,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2212 transitions. [2022-07-13 22:05:39,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:39,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2212 transitions. [2022-07-13 22:05:39,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.25) internal successors, (2212), 16 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,355 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,355 INFO L186 Difference]: Start difference. First operand has 202 places, 166 transitions, 546 flow. Second operand 16 states and 2212 transitions. [2022-07-13 22:05:39,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 222 transitions, 1163 flow [2022-07-13 22:05:39,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 222 transitions, 1000 flow, removed 76 selfloop flow, removed 10 redundant places. [2022-07-13 22:05:39,365 INFO L242 Difference]: Finished difference. Result has 208 places, 179 transitions, 674 flow [2022-07-13 22:05:39,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=674, PETRI_PLACES=208, PETRI_TRANSITIONS=179} [2022-07-13 22:05:39,366 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 49 predicate places. [2022-07-13 22:05:39,366 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 179 transitions, 674 flow [2022-07-13 22:05:39,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,367 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:39,367 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] [2022-07-13 22:05:39,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:05:39,367 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1999810905, now seen corresponding path program 2 times [2022-07-13 22:05:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:39,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868291297] [2022-07-13 22:05:39,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:39,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:39,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868291297] [2022-07-13 22:05:39,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868291297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:39,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:39,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:39,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906632] [2022-07-13 22:05:39,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:39,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:39,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:39,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:39,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:39,472 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:39,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 179 transitions, 674 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:39,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:39,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:39,798 INFO L129 PetriNetUnfolder]: 131/786 cut-off events. [2022-07-13 22:05:39,799 INFO L130 PetriNetUnfolder]: For 1870/1890 co-relation queries the response was YES. [2022-07-13 22:05:39,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2280 conditions, 786 events. 131/786 cut-off events. For 1870/1890 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4573 event pairs, 59 based on Foata normal form. 9/769 useless extension candidates. Maximal degree in co-relation 2200. Up to 199 conditions per place. [2022-07-13 22:05:39,803 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 81 selfloop transitions, 11 changer transitions 41/262 dead transitions. [2022-07-13 22:05:39,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 262 transitions, 1489 flow [2022-07-13 22:05:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3306 transitions. [2022-07-13 22:05:39,809 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2022-07-13 22:05:39,809 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3306 transitions. [2022-07-13 22:05:39,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3306 transitions. [2022-07-13 22:05:39,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:39,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3306 transitions. [2022-07-13 22:05:39,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.75) internal successors, (3306), 24 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,821 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,821 INFO L186 Difference]: Start difference. First operand has 208 places, 179 transitions, 674 flow. Second operand 24 states and 3306 transitions. [2022-07-13 22:05:39,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 262 transitions, 1489 flow [2022-07-13 22:05:39,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 262 transitions, 1351 flow, removed 68 selfloop flow, removed 9 redundant places. [2022-07-13 22:05:39,831 INFO L242 Difference]: Finished difference. Result has 236 places, 183 transitions, 741 flow [2022-07-13 22:05:39,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=741, PETRI_PLACES=236, PETRI_TRANSITIONS=183} [2022-07-13 22:05:39,833 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 77 predicate places. [2022-07-13 22:05:39,833 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 183 transitions, 741 flow [2022-07-13 22:05:39,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,834 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:39,834 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] [2022-07-13 22:05:39,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:05:39,834 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:39,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1549065623, now seen corresponding path program 3 times [2022-07-13 22:05:39,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:39,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653177453] [2022-07-13 22:05:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:39,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:39,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:39,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653177453] [2022-07-13 22:05:39,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653177453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:39,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:39,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:39,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354409521] [2022-07-13 22:05:39,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:39,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:39,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:39,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:39,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:39,968 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:39,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 183 transitions, 741 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:39,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:39,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:40,207 INFO L129 PetriNetUnfolder]: 148/828 cut-off events. [2022-07-13 22:05:40,208 INFO L130 PetriNetUnfolder]: For 3899/3921 co-relation queries the response was YES. [2022-07-13 22:05:40,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2866 conditions, 828 events. 148/828 cut-off events. For 3899/3921 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4845 event pairs, 77 based on Foata normal form. 10/808 useless extension candidates. Maximal degree in co-relation 2773. Up to 251 conditions per place. [2022-07-13 22:05:40,214 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 67 selfloop transitions, 18 changer transitions 25/239 dead transitions. [2022-07-13 22:05:40,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 239 transitions, 1577 flow [2022-07-13 22:05:40,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2347 transitions. [2022-07-13 22:05:40,219 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7844251336898396 [2022-07-13 22:05:40,219 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2347 transitions. [2022-07-13 22:05:40,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2347 transitions. [2022-07-13 22:05:40,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:40,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2347 transitions. [2022-07-13 22:05:40,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 138.05882352941177) internal successors, (2347), 17 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,239 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,239 INFO L186 Difference]: Start difference. First operand has 236 places, 183 transitions, 741 flow. Second operand 17 states and 2347 transitions. [2022-07-13 22:05:40,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 239 transitions, 1577 flow [2022-07-13 22:05:40,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 239 transitions, 1369 flow, removed 100 selfloop flow, removed 15 redundant places. [2022-07-13 22:05:40,253 INFO L242 Difference]: Finished difference. Result has 232 places, 198 transitions, 943 flow [2022-07-13 22:05:40,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=943, PETRI_PLACES=232, PETRI_TRANSITIONS=198} [2022-07-13 22:05:40,254 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 73 predicate places. [2022-07-13 22:05:40,254 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 198 transitions, 943 flow [2022-07-13 22:05:40,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,255 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:40,255 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] [2022-07-13 22:05:40,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:05:40,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1771293929, now seen corresponding path program 4 times [2022-07-13 22:05:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:40,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930447943] [2022-07-13 22:05:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:40,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:40,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:40,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930447943] [2022-07-13 22:05:40,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930447943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:40,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:40,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:40,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672244964] [2022-07-13 22:05:40,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:40,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:40,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:40,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:40,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:40,371 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:40,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 198 transitions, 943 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:40,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:40,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:40,624 INFO L129 PetriNetUnfolder]: 155/864 cut-off events. [2022-07-13 22:05:40,624 INFO L130 PetriNetUnfolder]: For 3195/3219 co-relation queries the response was YES. [2022-07-13 22:05:40,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2900 conditions, 864 events. 155/864 cut-off events. For 3195/3219 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5171 event pairs, 76 based on Foata normal form. 10/841 useless extension candidates. Maximal degree in co-relation 2808. Up to 235 conditions per place. [2022-07-13 22:05:40,631 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 78 selfloop transitions, 20 changer transitions 33/260 dead transitions. [2022-07-13 22:05:40,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 260 transitions, 1829 flow [2022-07-13 22:05:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2756 transitions. [2022-07-13 22:05:40,636 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7829545454545455 [2022-07-13 22:05:40,636 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2756 transitions. [2022-07-13 22:05:40,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2756 transitions. [2022-07-13 22:05:40,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:40,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2756 transitions. [2022-07-13 22:05:40,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.8) internal successors, (2756), 20 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,647 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,647 INFO L186 Difference]: Start difference. First operand has 232 places, 198 transitions, 943 flow. Second operand 20 states and 2756 transitions. [2022-07-13 22:05:40,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 260 transitions, 1829 flow [2022-07-13 22:05:40,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 260 transitions, 1676 flow, removed 74 selfloop flow, removed 11 redundant places. [2022-07-13 22:05:40,661 INFO L242 Difference]: Finished difference. Result has 249 places, 209 transitions, 1085 flow [2022-07-13 22:05:40,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1085, PETRI_PLACES=249, PETRI_TRANSITIONS=209} [2022-07-13 22:05:40,662 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-13 22:05:40,662 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 209 transitions, 1085 flow [2022-07-13 22:05:40,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,662 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:40,662 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] [2022-07-13 22:05:40,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:05:40,663 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:40,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1295898935, now seen corresponding path program 5 times [2022-07-13 22:05:40,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:40,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425560179] [2022-07-13 22:05:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:40,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:40,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425560179] [2022-07-13 22:05:40,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425560179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:40,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:40,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:40,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53658818] [2022-07-13 22:05:40,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:40,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:40,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:40,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:40,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:40,763 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:40,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 209 transitions, 1085 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:40,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:40,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:41,118 INFO L129 PetriNetUnfolder]: 152/860 cut-off events. [2022-07-13 22:05:41,118 INFO L130 PetriNetUnfolder]: For 3729/3757 co-relation queries the response was YES. [2022-07-13 22:05:41,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 860 events. 152/860 cut-off events. For 3729/3757 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5187 event pairs, 66 based on Foata normal form. 9/838 useless extension candidates. Maximal degree in co-relation 2891. Up to 200 conditions per place. [2022-07-13 22:05:41,125 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 97 selfloop transitions, 25 changer transitions 42/293 dead transitions. [2022-07-13 22:05:41,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 293 transitions, 2288 flow [2022-07-13 22:05:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3304 transitions. [2022-07-13 22:05:41,147 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-13 22:05:41,147 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3304 transitions. [2022-07-13 22:05:41,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3304 transitions. [2022-07-13 22:05:41,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:41,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3304 transitions. [2022-07-13 22:05:41,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.66666666666666) internal successors, (3304), 24 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,155 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,155 INFO L186 Difference]: Start difference. First operand has 249 places, 209 transitions, 1085 flow. Second operand 24 states and 3304 transitions. [2022-07-13 22:05:41,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 293 transitions, 2288 flow [2022-07-13 22:05:41,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 293 transitions, 2124 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-07-13 22:05:41,174 INFO L242 Difference]: Finished difference. Result has 267 places, 211 transitions, 1179 flow [2022-07-13 22:05:41,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1179, PETRI_PLACES=267, PETRI_TRANSITIONS=211} [2022-07-13 22:05:41,175 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 108 predicate places. [2022-07-13 22:05:41,175 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 211 transitions, 1179 flow [2022-07-13 22:05:41,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,175 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:41,175 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] [2022-07-13 22:05:41,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:05:41,176 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:41,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:41,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1308926351, now seen corresponding path program 6 times [2022-07-13 22:05:41,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:41,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356640796] [2022-07-13 22:05:41,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:41,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:41,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:41,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356640796] [2022-07-13 22:05:41,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356640796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:41,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:41,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:41,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593050881] [2022-07-13 22:05:41,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:41,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:41,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:41,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:41,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:41,258 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:41,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 211 transitions, 1179 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:41,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:41,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:41,597 INFO L129 PetriNetUnfolder]: 169/957 cut-off events. [2022-07-13 22:05:41,597 INFO L130 PetriNetUnfolder]: For 4574/4598 co-relation queries the response was YES. [2022-07-13 22:05:41,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3461 conditions, 957 events. 169/957 cut-off events. For 4574/4598 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6144 event pairs, 71 based on Foata normal form. 10/938 useless extension candidates. Maximal degree in co-relation 3364. Up to 268 conditions per place. [2022-07-13 22:05:41,620 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 87 selfloop transitions, 27 changer transitions 32/275 dead transitions. [2022-07-13 22:05:41,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 275 transitions, 2245 flow [2022-07-13 22:05:41,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:41,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3022 transitions. [2022-07-13 22:05:41,623 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7804752066115702 [2022-07-13 22:05:41,623 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3022 transitions. [2022-07-13 22:05:41,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3022 transitions. [2022-07-13 22:05:41,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:41,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3022 transitions. [2022-07-13 22:05:41,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.36363636363637) internal successors, (3022), 22 states have internal predecessors, (3022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,630 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,630 INFO L186 Difference]: Start difference. First operand has 267 places, 211 transitions, 1179 flow. Second operand 22 states and 3022 transitions. [2022-07-13 22:05:41,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 275 transitions, 2245 flow [2022-07-13 22:05:41,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 275 transitions, 2146 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-13 22:05:41,647 INFO L242 Difference]: Finished difference. Result has 269 places, 222 transitions, 1388 flow [2022-07-13 22:05:41,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1388, PETRI_PLACES=269, PETRI_TRANSITIONS=222} [2022-07-13 22:05:41,648 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-13 22:05:41,649 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 222 transitions, 1388 flow [2022-07-13 22:05:41,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,649 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:41,649 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] [2022-07-13 22:05:41,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:05:41,650 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:41,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:41,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1877607927, now seen corresponding path program 7 times [2022-07-13 22:05:41,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:41,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599880428] [2022-07-13 22:05:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:41,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:41,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:41,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599880428] [2022-07-13 22:05:41,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599880428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:41,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:41,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:41,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526206482] [2022-07-13 22:05:41,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:41,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:41,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:41,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:41,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:41,744 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:41,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 222 transitions, 1388 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:41,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:41,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:42,060 INFO L129 PetriNetUnfolder]: 165/952 cut-off events. [2022-07-13 22:05:42,060 INFO L130 PetriNetUnfolder]: For 5427/5454 co-relation queries the response was YES. [2022-07-13 22:05:42,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 952 events. 165/952 cut-off events. For 5427/5454 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6132 event pairs, 75 based on Foata normal form. 9/932 useless extension candidates. Maximal degree in co-relation 3478. Up to 261 conditions per place. [2022-07-13 22:05:42,068 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 87 selfloop transitions, 28 changer transitions 33/277 dead transitions. [2022-07-13 22:05:42,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 277 transitions, 2436 flow [2022-07-13 22:05:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2891 transitions. [2022-07-13 22:05:42,071 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-13 22:05:42,071 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2891 transitions. [2022-07-13 22:05:42,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2891 transitions. [2022-07-13 22:05:42,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:42,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2891 transitions. [2022-07-13 22:05:42,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.66666666666666) internal successors, (2891), 21 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,077 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,078 INFO L186 Difference]: Start difference. First operand has 269 places, 222 transitions, 1388 flow. Second operand 21 states and 2891 transitions. [2022-07-13 22:05:42,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 277 transitions, 2436 flow [2022-07-13 22:05:42,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 277 transitions, 2306 flow, removed 58 selfloop flow, removed 11 redundant places. [2022-07-13 22:05:42,097 INFO L242 Difference]: Finished difference. Result has 280 places, 228 transitions, 1563 flow [2022-07-13 22:05:42,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1563, PETRI_PLACES=280, PETRI_TRANSITIONS=228} [2022-07-13 22:05:42,098 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-07-13 22:05:42,098 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 228 transitions, 1563 flow [2022-07-13 22:05:42,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,099 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:42,099 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] [2022-07-13 22:05:42,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:05:42,099 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash -6717397, now seen corresponding path program 8 times [2022-07-13 22:05:42,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:42,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938469050] [2022-07-13 22:05:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:42,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:42,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:42,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938469050] [2022-07-13 22:05:42,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938469050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:42,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:42,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:42,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175307107] [2022-07-13 22:05:42,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:42,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:42,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:42,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:42,190 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:42,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 228 transitions, 1563 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:42,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:42,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:42,474 INFO L129 PetriNetUnfolder]: 152/922 cut-off events. [2022-07-13 22:05:42,475 INFO L130 PetriNetUnfolder]: For 5277/5302 co-relation queries the response was YES. [2022-07-13 22:05:42,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 922 events. 152/922 cut-off events. For 5277/5302 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5797 event pairs, 67 based on Foata normal form. 11/905 useless extension candidates. Maximal degree in co-relation 3340. Up to 271 conditions per place. [2022-07-13 22:05:42,481 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 86 selfloop transitions, 32 changer transitions 27/274 dead transitions. [2022-07-13 22:05:42,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 274 transitions, 2486 flow [2022-07-13 22:05:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2478 transitions. [2022-07-13 22:05:42,484 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-13 22:05:42,484 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2478 transitions. [2022-07-13 22:05:42,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2478 transitions. [2022-07-13 22:05:42,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:42,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2478 transitions. [2022-07-13 22:05:42,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.66666666666666) internal successors, (2478), 18 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:42,490 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:42,490 INFO L186 Difference]: Start difference. First operand has 280 places, 228 transitions, 1563 flow. Second operand 18 states and 2478 transitions. [2022-07-13 22:05:42,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 274 transitions, 2486 flow [2022-07-13 22:05:42,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 274 transitions, 2311 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-07-13 22:05:42,510 INFO L242 Difference]: Finished difference. Result has 279 places, 235 transitions, 1685 flow [2022-07-13 22:05:42,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1685, PETRI_PLACES=279, PETRI_TRANSITIONS=235} [2022-07-13 22:05:42,511 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 120 predicate places. [2022-07-13 22:05:42,511 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 235 transitions, 1685 flow [2022-07-13 22:05:42,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,511 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:42,512 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] [2022-07-13 22:05:42,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:05:42,512 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:42,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1255932177, now seen corresponding path program 9 times [2022-07-13 22:05:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:42,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520976385] [2022-07-13 22:05:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:42,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:42,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520976385] [2022-07-13 22:05:42,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520976385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:42,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:42,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:42,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633826462] [2022-07-13 22:05:42,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:42,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:42,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:42,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:42,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:42,599 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:42,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 235 transitions, 1685 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:42,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:42,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:42,879 INFO L129 PetriNetUnfolder]: 149/917 cut-off events. [2022-07-13 22:05:42,879 INFO L130 PetriNetUnfolder]: For 4834/4870 co-relation queries the response was YES. [2022-07-13 22:05:42,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 917 events. 149/917 cut-off events. For 4834/4870 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5810 event pairs, 70 based on Foata normal form. 12/899 useless extension candidates. Maximal degree in co-relation 3270. Up to 272 conditions per place. [2022-07-13 22:05:42,888 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 85 selfloop transitions, 33 changer transitions 33/280 dead transitions. [2022-07-13 22:05:42,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 280 transitions, 2600 flow [2022-07-13 22:05:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:42,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2751 transitions. [2022-07-13 22:05:42,890 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7815340909090909 [2022-07-13 22:05:42,890 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2751 transitions. [2022-07-13 22:05:42,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2751 transitions. [2022-07-13 22:05:42,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:42,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2751 transitions. [2022-07-13 22:05:42,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.55) internal successors, (2751), 20 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,897 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,897 INFO L186 Difference]: Start difference. First operand has 279 places, 235 transitions, 1685 flow. Second operand 20 states and 2751 transitions. [2022-07-13 22:05:42,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 280 transitions, 2600 flow [2022-07-13 22:05:42,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 280 transitions, 2470 flow, removed 37 selfloop flow, removed 10 redundant places. [2022-07-13 22:05:42,919 INFO L242 Difference]: Finished difference. Result has 292 places, 238 transitions, 1765 flow [2022-07-13 22:05:42,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1765, PETRI_PLACES=292, PETRI_TRANSITIONS=238} [2022-07-13 22:05:42,920 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-07-13 22:05:42,921 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 238 transitions, 1765 flow [2022-07-13 22:05:42,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,921 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:42,921 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] [2022-07-13 22:05:42,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:05:42,922 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:42,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:42,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1455674899, now seen corresponding path program 10 times [2022-07-13 22:05:42,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:42,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176500620] [2022-07-13 22:05:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:42,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:43,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:43,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176500620] [2022-07-13 22:05:43,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176500620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:43,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:43,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:43,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675973931] [2022-07-13 22:05:43,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:43,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:43,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:43,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:43,004 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:43,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 238 transitions, 1765 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:43,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:43,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:43,263 INFO L129 PetriNetUnfolder]: 133/862 cut-off events. [2022-07-13 22:05:43,263 INFO L130 PetriNetUnfolder]: For 4303/4328 co-relation queries the response was YES. [2022-07-13 22:05:43,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 862 events. 133/862 cut-off events. For 4303/4328 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5267 event pairs, 63 based on Foata normal form. 11/845 useless extension candidates. Maximal degree in co-relation 3006. Up to 259 conditions per place. [2022-07-13 22:05:43,270 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 82 selfloop transitions, 21 changer transitions 31/263 dead transitions. [2022-07-13 22:05:43,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 263 transitions, 2299 flow [2022-07-13 22:05:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2201 transitions. [2022-07-13 22:05:43,273 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7816051136363636 [2022-07-13 22:05:43,273 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2201 transitions. [2022-07-13 22:05:43,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2201 transitions. [2022-07-13 22:05:43,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:43,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2201 transitions. [2022-07-13 22:05:43,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.5625) internal successors, (2201), 16 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,278 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,278 INFO L186 Difference]: Start difference. First operand has 292 places, 238 transitions, 1765 flow. Second operand 16 states and 2201 transitions. [2022-07-13 22:05:43,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 263 transitions, 2299 flow [2022-07-13 22:05:43,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 263 transitions, 2194 flow, removed 31 selfloop flow, removed 12 redundant places. [2022-07-13 22:05:43,299 INFO L242 Difference]: Finished difference. Result has 288 places, 222 transitions, 1469 flow [2022-07-13 22:05:43,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1469, PETRI_PLACES=288, PETRI_TRANSITIONS=222} [2022-07-13 22:05:43,300 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 129 predicate places. [2022-07-13 22:05:43,300 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 222 transitions, 1469 flow [2022-07-13 22:05:43,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,301 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:43,301 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:43,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:05:43,301 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:43,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:43,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1878967331, now seen corresponding path program 11 times [2022-07-13 22:05:43,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:43,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810988811] [2022-07-13 22:05:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:43,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:43,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810988811] [2022-07-13 22:05:43,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810988811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:43,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:43,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:43,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519171248] [2022-07-13 22:05:43,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:43,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:43,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:43,383 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:43,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 222 transitions, 1469 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:43,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:43,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:43,651 INFO L129 PetriNetUnfolder]: 130/845 cut-off events. [2022-07-13 22:05:43,651 INFO L130 PetriNetUnfolder]: For 4148/4180 co-relation queries the response was YES. [2022-07-13 22:05:43,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3010 conditions, 845 events. 130/845 cut-off events. For 4148/4180 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5084 event pairs, 65 based on Foata normal form. 11/827 useless extension candidates. Maximal degree in co-relation 2945. Up to 252 conditions per place. [2022-07-13 22:05:43,658 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 25 changer transitions 30/260 dead transitions. [2022-07-13 22:05:43,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 260 transitions, 2232 flow [2022-07-13 22:05:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2481 transitions. [2022-07-13 22:05:43,660 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7831439393939394 [2022-07-13 22:05:43,660 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2481 transitions. [2022-07-13 22:05:43,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2481 transitions. [2022-07-13 22:05:43,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:43,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2481 transitions. [2022-07-13 22:05:43,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.83333333333334) internal successors, (2481), 18 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:43,666 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:43,666 INFO L186 Difference]: Start difference. First operand has 288 places, 222 transitions, 1469 flow. Second operand 18 states and 2481 transitions. [2022-07-13 22:05:43,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 260 transitions, 2232 flow [2022-07-13 22:05:43,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 260 transitions, 2116 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-07-13 22:05:43,685 INFO L242 Difference]: Finished difference. Result has 278 places, 224 transitions, 1512 flow [2022-07-13 22:05:43,685 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1512, PETRI_PLACES=278, PETRI_TRANSITIONS=224} [2022-07-13 22:05:43,685 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2022-07-13 22:05:43,685 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 224 transitions, 1512 flow [2022-07-13 22:05:43,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,686 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:43,686 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] [2022-07-13 22:05:43,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:05:43,686 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:43,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:43,687 INFO L85 PathProgramCache]: Analyzing trace with hash 279000489, now seen corresponding path program 12 times [2022-07-13 22:05:43,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:43,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825494938] [2022-07-13 22:05:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:43,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:43,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:43,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825494938] [2022-07-13 22:05:43,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825494938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:43,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:43,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472064310] [2022-07-13 22:05:43,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:43,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:43,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:43,770 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:43,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 224 transitions, 1512 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:43,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:43,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:44,031 INFO L129 PetriNetUnfolder]: 122/823 cut-off events. [2022-07-13 22:05:44,031 INFO L130 PetriNetUnfolder]: For 3531/3554 co-relation queries the response was YES. [2022-07-13 22:05:44,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 823 events. 122/823 cut-off events. For 3531/3554 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4912 event pairs, 67 based on Foata normal form. 9/802 useless extension candidates. Maximal degree in co-relation 2757. Up to 249 conditions per place. [2022-07-13 22:05:44,037 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 74 selfloop transitions, 16 changer transitions 30/249 dead transitions. [2022-07-13 22:05:44,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 249 transitions, 2027 flow [2022-07-13 22:05:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2340 transitions. [2022-07-13 22:05:44,040 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7820855614973262 [2022-07-13 22:05:44,040 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2340 transitions. [2022-07-13 22:05:44,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2340 transitions. [2022-07-13 22:05:44,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:44,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2340 transitions. [2022-07-13 22:05:44,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.64705882352942) internal successors, (2340), 17 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,045 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,045 INFO L186 Difference]: Start difference. First operand has 278 places, 224 transitions, 1512 flow. Second operand 17 states and 2340 transitions. [2022-07-13 22:05:44,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 249 transitions, 2027 flow [2022-07-13 22:05:44,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 249 transitions, 1908 flow, removed 34 selfloop flow, removed 8 redundant places. [2022-07-13 22:05:44,060 INFO L242 Difference]: Finished difference. Result has 284 places, 215 transitions, 1318 flow [2022-07-13 22:05:44,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1318, PETRI_PLACES=284, PETRI_TRANSITIONS=215} [2022-07-13 22:05:44,061 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 125 predicate places. [2022-07-13 22:05:44,061 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 215 transitions, 1318 flow [2022-07-13 22:05:44,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,062 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:44,062 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:44,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:05:44,062 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:44,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash -156541461, now seen corresponding path program 13 times [2022-07-13 22:05:44,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:44,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495105103] [2022-07-13 22:05:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:44,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:44,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:44,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495105103] [2022-07-13 22:05:44,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495105103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:44,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:44,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:44,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871049776] [2022-07-13 22:05:44,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:44,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:44,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:44,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:44,146 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:44,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 215 transitions, 1318 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:44,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:44,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:44,383 INFO L129 PetriNetUnfolder]: 109/760 cut-off events. [2022-07-13 22:05:44,383 INFO L130 PetriNetUnfolder]: For 2786/2809 co-relation queries the response was YES. [2022-07-13 22:05:44,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 760 events. 109/760 cut-off events. For 2786/2809 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4356 event pairs, 62 based on Foata normal form. 9/741 useless extension candidates. Maximal degree in co-relation 2409. Up to 237 conditions per place. [2022-07-13 22:05:44,413 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 64 selfloop transitions, 5 changer transitions 33/231 dead transitions. [2022-07-13 22:05:44,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 231 transitions, 1643 flow [2022-07-13 22:05:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2465 transitions. [2022-07-13 22:05:44,415 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7780934343434344 [2022-07-13 22:05:44,415 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2465 transitions. [2022-07-13 22:05:44,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2465 transitions. [2022-07-13 22:05:44,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:44,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2465 transitions. [2022-07-13 22:05:44,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.94444444444446) internal successors, (2465), 18 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:44,421 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:44,421 INFO L186 Difference]: Start difference. First operand has 284 places, 215 transitions, 1318 flow. Second operand 18 states and 2465 transitions. [2022-07-13 22:05:44,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 231 transitions, 1643 flow [2022-07-13 22:05:44,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 231 transitions, 1529 flow, removed 16 selfloop flow, removed 20 redundant places. [2022-07-13 22:05:44,435 INFO L242 Difference]: Finished difference. Result has 270 places, 195 transitions, 962 flow [2022-07-13 22:05:44,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=962, PETRI_PLACES=270, PETRI_TRANSITIONS=195} [2022-07-13 22:05:44,435 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-07-13 22:05:44,435 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 195 transitions, 962 flow [2022-07-13 22:05:44,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,436 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:44,436 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] [2022-07-13 22:05:44,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:05:44,436 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:44,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1718238291, now seen corresponding path program 14 times [2022-07-13 22:05:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:44,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048560516] [2022-07-13 22:05:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:44,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:44,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:44,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048560516] [2022-07-13 22:05:44,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048560516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:44,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:44,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:44,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717436022] [2022-07-13 22:05:44,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:44,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:44,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:44,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:44,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:44,513 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:44,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 195 transitions, 962 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:44,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:44,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:44,830 INFO L129 PetriNetUnfolder]: 113/780 cut-off events. [2022-07-13 22:05:44,830 INFO L130 PetriNetUnfolder]: For 2591/2611 co-relation queries the response was YES. [2022-07-13 22:05:44,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 780 events. 113/780 cut-off events. For 2591/2611 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4553 event pairs, 60 based on Foata normal form. 9/762 useless extension candidates. Maximal degree in co-relation 2424. Up to 212 conditions per place. [2022-07-13 22:05:44,836 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 22 changer transitions 34/244 dead transitions. [2022-07-13 22:05:44,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 244 transitions, 1745 flow [2022-07-13 22:05:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3017 transitions. [2022-07-13 22:05:44,839 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7791838842975206 [2022-07-13 22:05:44,839 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3017 transitions. [2022-07-13 22:05:44,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3017 transitions. [2022-07-13 22:05:44,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:44,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3017 transitions. [2022-07-13 22:05:44,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.13636363636363) internal successors, (3017), 22 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,846 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,846 INFO L186 Difference]: Start difference. First operand has 270 places, 195 transitions, 962 flow. Second operand 22 states and 3017 transitions. [2022-07-13 22:05:44,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 244 transitions, 1745 flow [2022-07-13 22:05:44,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 244 transitions, 1589 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-07-13 22:05:44,857 INFO L242 Difference]: Finished difference. Result has 258 places, 200 transitions, 1043 flow [2022-07-13 22:05:44,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1043, PETRI_PLACES=258, PETRI_TRANSITIONS=200} [2022-07-13 22:05:44,858 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-13 22:05:44,858 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 200 transitions, 1043 flow [2022-07-13 22:05:44,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,859 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:44,859 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] [2022-07-13 22:05:44,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:05:44,859 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:44,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:44,859 INFO L85 PathProgramCache]: Analyzing trace with hash -60478949, now seen corresponding path program 15 times [2022-07-13 22:05:44,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:44,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381538397] [2022-07-13 22:05:44,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:44,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:44,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:44,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381538397] [2022-07-13 22:05:44,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381538397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:44,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:44,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:44,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341966420] [2022-07-13 22:05:44,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:44,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:44,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:44,942 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:44,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 200 transitions, 1043 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:44,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:44,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:44,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:45,192 INFO L129 PetriNetUnfolder]: 114/791 cut-off events. [2022-07-13 22:05:45,193 INFO L130 PetriNetUnfolder]: For 2859/2879 co-relation queries the response was YES. [2022-07-13 22:05:45,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 791 events. 114/791 cut-off events. For 2859/2879 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4699 event pairs, 57 based on Foata normal form. 9/774 useless extension candidates. Maximal degree in co-relation 2504. Up to 218 conditions per place. [2022-07-13 22:05:45,198 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 60 selfloop transitions, 27 changer transitions 27/243 dead transitions. [2022-07-13 22:05:45,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 243 transitions, 1780 flow [2022-07-13 22:05:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2342 transitions. [2022-07-13 22:05:45,201 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7827540106951871 [2022-07-13 22:05:45,201 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2342 transitions. [2022-07-13 22:05:45,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2342 transitions. [2022-07-13 22:05:45,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:45,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2342 transitions. [2022-07-13 22:05:45,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.76470588235293) internal successors, (2342), 17 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,206 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,206 INFO L186 Difference]: Start difference. First operand has 258 places, 200 transitions, 1043 flow. Second operand 17 states and 2342 transitions. [2022-07-13 22:05:45,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 243 transitions, 1780 flow [2022-07-13 22:05:45,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 243 transitions, 1688 flow, removed 33 selfloop flow, removed 13 redundant places. [2022-07-13 22:05:45,217 INFO L242 Difference]: Finished difference. Result has 257 places, 208 transitions, 1208 flow [2022-07-13 22:05:45,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1208, PETRI_PLACES=257, PETRI_TRANSITIONS=208} [2022-07-13 22:05:45,218 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2022-07-13 22:05:45,218 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 208 transitions, 1208 flow [2022-07-13 22:05:45,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,219 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:45,219 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] [2022-07-13 22:05:45,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:05:45,219 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:45,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:45,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1771188031, now seen corresponding path program 16 times [2022-07-13 22:05:45,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:45,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548338991] [2022-07-13 22:05:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:45,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:45,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:45,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548338991] [2022-07-13 22:05:45,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548338991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:45,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:45,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:45,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821360857] [2022-07-13 22:05:45,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:45,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:45,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:45,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:45,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:45,296 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:45,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 208 transitions, 1208 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:45,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:45,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:45,555 INFO L129 PetriNetUnfolder]: 103/750 cut-off events. [2022-07-13 22:05:45,556 INFO L130 PetriNetUnfolder]: For 2379/2399 co-relation queries the response was YES. [2022-07-13 22:05:45,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 750 events. 103/750 cut-off events. For 2379/2399 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4334 event pairs, 59 based on Foata normal form. 9/732 useless extension candidates. Maximal degree in co-relation 2316. Up to 213 conditions per place. [2022-07-13 22:05:45,561 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 57 selfloop transitions, 13 changer transitions 33/232 dead transitions. [2022-07-13 22:05:45,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 232 transitions, 1628 flow [2022-07-13 22:05:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2022-07-13 22:05:45,563 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2022-07-13 22:05:45,563 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2022-07-13 22:05:45,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2022-07-13 22:05:45,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:45,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2022-07-13 22:05:45,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.27777777777777) internal successors, (2471), 18 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:45,568 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:45,568 INFO L186 Difference]: Start difference. First operand has 257 places, 208 transitions, 1208 flow. Second operand 18 states and 2471 transitions. [2022-07-13 22:05:45,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 232 transitions, 1628 flow [2022-07-13 22:05:45,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 232 transitions, 1518 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-07-13 22:05:45,580 INFO L242 Difference]: Finished difference. Result has 264 places, 193 transitions, 948 flow [2022-07-13 22:05:45,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=948, PETRI_PLACES=264, PETRI_TRANSITIONS=193} [2022-07-13 22:05:45,581 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 105 predicate places. [2022-07-13 22:05:45,581 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 193 transitions, 948 flow [2022-07-13 22:05:45,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,581 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:45,581 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] [2022-07-13 22:05:45,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:05:45,582 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash -603979919, now seen corresponding path program 17 times [2022-07-13 22:05:45,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:45,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227082211] [2022-07-13 22:05:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:45,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:45,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:45,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227082211] [2022-07-13 22:05:45,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227082211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:45,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:45,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:45,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26205475] [2022-07-13 22:05:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:45,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:45,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:45,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:45,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:45,658 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:45,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 193 transitions, 948 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:45,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:45,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:45,947 INFO L129 PetriNetUnfolder]: 102/742 cut-off events. [2022-07-13 22:05:45,947 INFO L130 PetriNetUnfolder]: For 2666/2686 co-relation queries the response was YES. [2022-07-13 22:05:45,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 742 events. 102/742 cut-off events. For 2666/2686 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4282 event pairs, 57 based on Foata normal form. 9/725 useless extension candidates. Maximal degree in co-relation 2297. Up to 204 conditions per place. [2022-07-13 22:05:45,953 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 53 selfloop transitions, 19 changer transitions 34/235 dead transitions. [2022-07-13 22:05:45,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 235 transitions, 1724 flow [2022-07-13 22:05:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:45,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2880 transitions. [2022-07-13 22:05:45,955 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7792207792207793 [2022-07-13 22:05:45,955 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2880 transitions. [2022-07-13 22:05:45,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2880 transitions. [2022-07-13 22:05:45,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:45,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2880 transitions. [2022-07-13 22:05:45,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.14285714285714) internal successors, (2880), 21 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,961 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,961 INFO L186 Difference]: Start difference. First operand has 264 places, 193 transitions, 948 flow. Second operand 21 states and 2880 transitions. [2022-07-13 22:05:45,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 235 transitions, 1724 flow [2022-07-13 22:05:45,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 235 transitions, 1558 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-13 22:05:45,972 INFO L242 Difference]: Finished difference. Result has 256 places, 196 transitions, 1015 flow [2022-07-13 22:05:45,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1015, PETRI_PLACES=256, PETRI_TRANSITIONS=196} [2022-07-13 22:05:45,973 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 97 predicate places. [2022-07-13 22:05:45,973 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 196 transitions, 1015 flow [2022-07-13 22:05:45,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:45,974 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:45,974 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] [2022-07-13 22:05:45,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:05:45,974 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:45,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:45,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1772295727, now seen corresponding path program 18 times [2022-07-13 22:05:45,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:45,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787539211] [2022-07-13 22:05:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:45,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:46,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:46,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787539211] [2022-07-13 22:05:46,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787539211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:46,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:46,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:46,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815111823] [2022-07-13 22:05:46,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:46,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:46,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:46,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:46,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:46,060 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:46,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 196 transitions, 1015 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:46,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:46,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:46,318 INFO L129 PetriNetUnfolder]: 96/717 cut-off events. [2022-07-13 22:05:46,318 INFO L130 PetriNetUnfolder]: For 2281/2301 co-relation queries the response was YES. [2022-07-13 22:05:46,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 717 events. 96/717 cut-off events. For 2281/2301 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4060 event pairs, 59 based on Foata normal form. 9/700 useless extension candidates. Maximal degree in co-relation 2171. Up to 208 conditions per place. [2022-07-13 22:05:46,323 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 49 selfloop transitions, 21 changer transitions 30/229 dead transitions. [2022-07-13 22:05:46,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 229 transitions, 1631 flow [2022-07-13 22:05:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2475 transitions. [2022-07-13 22:05:46,325 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.78125 [2022-07-13 22:05:46,325 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2475 transitions. [2022-07-13 22:05:46,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2475 transitions. [2022-07-13 22:05:46,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:46,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2475 transitions. [2022-07-13 22:05:46,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.5) internal successors, (2475), 18 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:46,330 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:46,330 INFO L186 Difference]: Start difference. First operand has 256 places, 196 transitions, 1015 flow. Second operand 18 states and 2475 transitions. [2022-07-13 22:05:46,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 229 transitions, 1631 flow [2022-07-13 22:05:46,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 229 transitions, 1476 flow, removed 59 selfloop flow, removed 15 redundant places. [2022-07-13 22:05:46,341 INFO L242 Difference]: Finished difference. Result has 250 places, 197 transitions, 1033 flow [2022-07-13 22:05:46,342 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1033, PETRI_PLACES=250, PETRI_TRANSITIONS=197} [2022-07-13 22:05:46,342 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 91 predicate places. [2022-07-13 22:05:46,342 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 197 transitions, 1033 flow [2022-07-13 22:05:46,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,342 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:46,343 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] [2022-07-13 22:05:46,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:05:46,343 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1691963201, now seen corresponding path program 19 times [2022-07-13 22:05:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:46,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207342192] [2022-07-13 22:05:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:46,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:46,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:46,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207342192] [2022-07-13 22:05:46,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207342192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:46,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:46,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480106252] [2022-07-13 22:05:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:46,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:46,430 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:46,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 197 transitions, 1033 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:46,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:46,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:46,679 INFO L129 PetriNetUnfolder]: 93/706 cut-off events. [2022-07-13 22:05:46,680 INFO L130 PetriNetUnfolder]: For 1769/1789 co-relation queries the response was YES. [2022-07-13 22:05:46,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 706 events. 93/706 cut-off events. For 1769/1789 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3921 event pairs, 57 based on Foata normal form. 9/690 useless extension candidates. Maximal degree in co-relation 2028. Up to 207 conditions per place. [2022-07-13 22:05:46,685 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 48 selfloop transitions, 12 changer transitions 33/222 dead transitions. [2022-07-13 22:05:46,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 222 transitions, 1422 flow [2022-07-13 22:05:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2338 transitions. [2022-07-13 22:05:46,687 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7814171122994652 [2022-07-13 22:05:46,687 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2338 transitions. [2022-07-13 22:05:46,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2338 transitions. [2022-07-13 22:05:46,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:46,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2338 transitions. [2022-07-13 22:05:46,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.52941176470588) internal successors, (2338), 17 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,691 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,692 INFO L186 Difference]: Start difference. First operand has 250 places, 197 transitions, 1033 flow. Second operand 17 states and 2338 transitions. [2022-07-13 22:05:46,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 222 transitions, 1422 flow [2022-07-13 22:05:46,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 222 transitions, 1270 flow, removed 43 selfloop flow, removed 11 redundant places. [2022-07-13 22:05:46,700 INFO L242 Difference]: Finished difference. Result has 253 places, 188 transitions, 836 flow [2022-07-13 22:05:46,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=836, PETRI_PLACES=253, PETRI_TRANSITIONS=188} [2022-07-13 22:05:46,700 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-07-13 22:05:46,701 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 188 transitions, 836 flow [2022-07-13 22:05:46,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,701 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:46,701 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] [2022-07-13 22:05:46,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:05:46,701 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:46,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:46,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1710327599, now seen corresponding path program 20 times [2022-07-13 22:05:46,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:46,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140844689] [2022-07-13 22:05:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:46,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:46,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:46,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140844689] [2022-07-13 22:05:46,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140844689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:46,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:46,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623961694] [2022-07-13 22:05:46,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:46,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:46,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:46,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:46,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:46,780 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:46,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 188 transitions, 836 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:46,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:46,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:46,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:47,038 INFO L129 PetriNetUnfolder]: 79/619 cut-off events. [2022-07-13 22:05:47,038 INFO L130 PetriNetUnfolder]: For 1178/1198 co-relation queries the response was YES. [2022-07-13 22:05:47,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 619 events. 79/619 cut-off events. For 1178/1198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3239 event pairs, 54 based on Foata normal form. 9/603 useless extension candidates. Maximal degree in co-relation 1637. Up to 187 conditions per place. [2022-07-13 22:05:47,041 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 34 selfloop transitions, 0 changer transitions 45/202 dead transitions. [2022-07-13 22:05:47,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 202 transitions, 1041 flow [2022-07-13 22:05:47,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2462 transitions. [2022-07-13 22:05:47,043 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7771464646464646 [2022-07-13 22:05:47,043 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2462 transitions. [2022-07-13 22:05:47,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2462 transitions. [2022-07-13 22:05:47,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:47,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2462 transitions. [2022-07-13 22:05:47,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.77777777777777) internal successors, (2462), 18 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:47,048 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:47,048 INFO L186 Difference]: Start difference. First operand has 253 places, 188 transitions, 836 flow. Second operand 18 states and 2462 transitions. [2022-07-13 22:05:47,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 202 transitions, 1041 flow [2022-07-13 22:05:47,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 202 transitions, 955 flow, removed 18 selfloop flow, removed 18 redundant places. [2022-07-13 22:05:47,054 INFO L242 Difference]: Finished difference. Result has 239 places, 157 transitions, 486 flow [2022-07-13 22:05:47,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=486, PETRI_PLACES=239, PETRI_TRANSITIONS=157} [2022-07-13 22:05:47,055 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 80 predicate places. [2022-07-13 22:05:47,055 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 157 transitions, 486 flow [2022-07-13 22:05:47,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,056 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:47,056 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] [2022-07-13 22:05:47,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:05:47,056 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:47,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1228416663, now seen corresponding path program 2 times [2022-07-13 22:05:47,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:47,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079020652] [2022-07-13 22:05:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:47,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:47,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:47,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079020652] [2022-07-13 22:05:47,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079020652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:47,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:47,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:47,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761657337] [2022-07-13 22:05:47,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:47,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:47,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:47,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:47,142 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:47,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 157 transitions, 486 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:47,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:47,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:47,370 INFO L129 PetriNetUnfolder]: 90/605 cut-off events. [2022-07-13 22:05:47,370 INFO L130 PetriNetUnfolder]: For 942/947 co-relation queries the response was YES. [2022-07-13 22:05:47,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 605 events. 90/605 cut-off events. For 942/947 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2986 event pairs, 40 based on Foata normal form. 1/584 useless extension candidates. Maximal degree in co-relation 1514. Up to 142 conditions per place. [2022-07-13 22:05:47,373 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 52 selfloop transitions, 14 changer transitions 22/208 dead transitions. [2022-07-13 22:05:47,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 208 transitions, 1007 flow [2022-07-13 22:05:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2206 transitions. [2022-07-13 22:05:47,375 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7833806818181818 [2022-07-13 22:05:47,375 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2206 transitions. [2022-07-13 22:05:47,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2206 transitions. [2022-07-13 22:05:47,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:47,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2206 transitions. [2022-07-13 22:05:47,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.875) internal successors, (2206), 16 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,379 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,379 INFO L186 Difference]: Start difference. First operand has 239 places, 157 transitions, 486 flow. Second operand 16 states and 2206 transitions. [2022-07-13 22:05:47,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 208 transitions, 1007 flow [2022-07-13 22:05:47,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 208 transitions, 951 flow, removed 27 selfloop flow, removed 10 redundant places. [2022-07-13 22:05:47,385 INFO L242 Difference]: Finished difference. Result has 216 places, 169 transitions, 635 flow [2022-07-13 22:05:47,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=635, PETRI_PLACES=216, PETRI_TRANSITIONS=169} [2022-07-13 22:05:47,386 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 57 predicate places. [2022-07-13 22:05:47,386 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 169 transitions, 635 flow [2022-07-13 22:05:47,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,386 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:47,386 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] [2022-07-13 22:05:47,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:05:47,387 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:47,387 INFO L85 PathProgramCache]: Analyzing trace with hash 737561389, now seen corresponding path program 3 times [2022-07-13 22:05:47,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:47,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840441455] [2022-07-13 22:05:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:47,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:47,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:47,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840441455] [2022-07-13 22:05:47,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840441455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:47,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:47,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:47,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518296003] [2022-07-13 22:05:47,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:47,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:47,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:47,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:47,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:47,457 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:47,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 169 transitions, 635 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:47,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:47,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:47,688 INFO L129 PetriNetUnfolder]: 93/609 cut-off events. [2022-07-13 22:05:47,689 INFO L130 PetriNetUnfolder]: For 1439/1444 co-relation queries the response was YES. [2022-07-13 22:05:47,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 609 events. 93/609 cut-off events. For 1439/1444 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3060 event pairs, 38 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 1688. Up to 151 conditions per place. [2022-07-13 22:05:47,692 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 18 changer transitions 19/213 dead transitions. [2022-07-13 22:05:47,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 213 transitions, 1227 flow [2022-07-13 22:05:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2204 transitions. [2022-07-13 22:05:47,694 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2022-07-13 22:05:47,694 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2204 transitions. [2022-07-13 22:05:47,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2204 transitions. [2022-07-13 22:05:47,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:47,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2204 transitions. [2022-07-13 22:05:47,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.75) internal successors, (2204), 16 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,698 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,698 INFO L186 Difference]: Start difference. First operand has 216 places, 169 transitions, 635 flow. Second operand 16 states and 2204 transitions. [2022-07-13 22:05:47,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 213 transitions, 1227 flow [2022-07-13 22:05:47,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 213 transitions, 1099 flow, removed 63 selfloop flow, removed 7 redundant places. [2022-07-13 22:05:47,705 INFO L242 Difference]: Finished difference. Result has 228 places, 179 transitions, 754 flow [2022-07-13 22:05:47,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=754, PETRI_PLACES=228, PETRI_TRANSITIONS=179} [2022-07-13 22:05:47,706 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 69 predicate places. [2022-07-13 22:05:47,706 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 179 transitions, 754 flow [2022-07-13 22:05:47,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,706 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:47,706 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] [2022-07-13 22:05:47,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 22:05:47,707 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:47,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1951205417, now seen corresponding path program 4 times [2022-07-13 22:05:47,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:47,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449492434] [2022-07-13 22:05:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:47,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:47,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:47,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449492434] [2022-07-13 22:05:47,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449492434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:47,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:47,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:47,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666063295] [2022-07-13 22:05:47,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:47,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:47,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:47,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:47,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:47,779 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:47,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 179 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:47,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:47,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:47,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:48,064 INFO L129 PetriNetUnfolder]: 118/690 cut-off events. [2022-07-13 22:05:48,064 INFO L130 PetriNetUnfolder]: For 2042/2050 co-relation queries the response was YES. [2022-07-13 22:05:48,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 690 events. 118/690 cut-off events. For 2042/2050 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3601 event pairs, 54 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 2113. Up to 151 conditions per place. [2022-07-13 22:05:48,068 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 70 selfloop transitions, 20 changer transitions 29/239 dead transitions. [2022-07-13 22:05:48,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 239 transitions, 1596 flow [2022-07-13 22:05:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2750 transitions. [2022-07-13 22:05:48,070 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.78125 [2022-07-13 22:05:48,070 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2750 transitions. [2022-07-13 22:05:48,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2750 transitions. [2022-07-13 22:05:48,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:48,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2750 transitions. [2022-07-13 22:05:48,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.5) internal successors, (2750), 20 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,075 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,076 INFO L186 Difference]: Start difference. First operand has 228 places, 179 transitions, 754 flow. Second operand 20 states and 2750 transitions. [2022-07-13 22:05:48,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 239 transitions, 1596 flow [2022-07-13 22:05:48,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 239 transitions, 1473 flow, removed 41 selfloop flow, removed 8 redundant places. [2022-07-13 22:05:48,083 INFO L242 Difference]: Finished difference. Result has 249 places, 190 transitions, 914 flow [2022-07-13 22:05:48,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=914, PETRI_PLACES=249, PETRI_TRANSITIONS=190} [2022-07-13 22:05:48,084 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-13 22:05:48,084 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 190 transitions, 914 flow [2022-07-13 22:05:48,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,084 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:48,085 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] [2022-07-13 22:05:48,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 22:05:48,085 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1904803889, now seen corresponding path program 5 times [2022-07-13 22:05:48,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:48,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829679652] [2022-07-13 22:05:48,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:48,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:48,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829679652] [2022-07-13 22:05:48,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829679652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:48,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:48,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:48,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905510915] [2022-07-13 22:05:48,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:48,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:48,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:48,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:48,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:48,166 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:48,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 190 transitions, 914 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:48,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:48,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:48,479 INFO L129 PetriNetUnfolder]: 113/672 cut-off events. [2022-07-13 22:05:48,479 INFO L130 PetriNetUnfolder]: For 3092/3103 co-relation queries the response was YES. [2022-07-13 22:05:48,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 672 events. 113/672 cut-off events. For 3092/3103 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3526 event pairs, 39 based on Foata normal form. 1/652 useless extension candidates. Maximal degree in co-relation 2286. Up to 113 conditions per place. [2022-07-13 22:05:48,487 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 94 selfloop transitions, 21 changer transitions 38/273 dead transitions. [2022-07-13 22:05:48,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 273 transitions, 2069 flow [2022-07-13 22:05:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3298 transitions. [2022-07-13 22:05:48,489 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7807765151515151 [2022-07-13 22:05:48,489 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3298 transitions. [2022-07-13 22:05:48,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3298 transitions. [2022-07-13 22:05:48,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:48,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3298 transitions. [2022-07-13 22:05:48,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.41666666666666) internal successors, (3298), 24 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,495 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,496 INFO L186 Difference]: Start difference. First operand has 249 places, 190 transitions, 914 flow. Second operand 24 states and 3298 transitions. [2022-07-13 22:05:48,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 273 transitions, 2069 flow [2022-07-13 22:05:48,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 273 transitions, 1907 flow, removed 74 selfloop flow, removed 10 redundant places. [2022-07-13 22:05:48,508 INFO L242 Difference]: Finished difference. Result has 269 places, 192 transitions, 1002 flow [2022-07-13 22:05:48,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1002, PETRI_PLACES=269, PETRI_TRANSITIONS=192} [2022-07-13 22:05:48,509 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-13 22:05:48,509 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 192 transitions, 1002 flow [2022-07-13 22:05:48,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,509 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:48,509 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] [2022-07-13 22:05:48,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 22:05:48,510 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:48,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:48,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1901576121, now seen corresponding path program 6 times [2022-07-13 22:05:48,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:48,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538371905] [2022-07-13 22:05:48,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:48,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:48,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:48,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538371905] [2022-07-13 22:05:48,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538371905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:48,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:48,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703988810] [2022-07-13 22:05:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:48,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:48,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:48,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:48,591 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:48,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 192 transitions, 1002 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:48,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:48,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:48,903 INFO L129 PetriNetUnfolder]: 122/739 cut-off events. [2022-07-13 22:05:48,903 INFO L130 PetriNetUnfolder]: For 3969/3978 co-relation queries the response was YES. [2022-07-13 22:05:48,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 739 events. 122/739 cut-off events. For 3969/3978 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4115 event pairs, 44 based on Foata normal form. 3/722 useless extension candidates. Maximal degree in co-relation 2612. Up to 167 conditions per place. [2022-07-13 22:05:48,908 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 22 changer transitions 29/242 dead transitions. [2022-07-13 22:05:48,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 242 transitions, 1877 flow [2022-07-13 22:05:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3015 transitions. [2022-07-13 22:05:48,911 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7786673553719008 [2022-07-13 22:05:48,911 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3015 transitions. [2022-07-13 22:05:48,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3015 transitions. [2022-07-13 22:05:48,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:48,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3015 transitions. [2022-07-13 22:05:48,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.04545454545453) internal successors, (3015), 22 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,917 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,917 INFO L186 Difference]: Start difference. First operand has 269 places, 192 transitions, 1002 flow. Second operand 22 states and 3015 transitions. [2022-07-13 22:05:48,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 242 transitions, 1877 flow [2022-07-13 22:05:48,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 242 transitions, 1750 flow, removed 38 selfloop flow, removed 18 redundant places. [2022-07-13 22:05:48,929 INFO L242 Difference]: Finished difference. Result has 270 places, 195 transitions, 1074 flow [2022-07-13 22:05:48,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1074, PETRI_PLACES=270, PETRI_TRANSITIONS=195} [2022-07-13 22:05:48,930 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-07-13 22:05:48,930 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 195 transitions, 1074 flow [2022-07-13 22:05:48,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,931 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:48,931 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:48,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 22:05:48,931 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:48,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:48,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1112985117, now seen corresponding path program 7 times [2022-07-13 22:05:48,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:48,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404769285] [2022-07-13 22:05:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:48,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:49,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:49,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404769285] [2022-07-13 22:05:49,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404769285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:49,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:49,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:49,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159699483] [2022-07-13 22:05:49,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:49,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:49,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:49,013 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:49,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 195 transitions, 1074 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:49,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:49,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:49,282 INFO L129 PetriNetUnfolder]: 117/715 cut-off events. [2022-07-13 22:05:49,282 INFO L130 PetriNetUnfolder]: For 4829/4840 co-relation queries the response was YES. [2022-07-13 22:05:49,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2738 conditions, 715 events. 117/715 cut-off events. For 4829/4840 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3945 event pairs, 39 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 2664. Up to 163 conditions per place. [2022-07-13 22:05:49,288 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 83 selfloop transitions, 21 changer transitions 29/253 dead transitions. [2022-07-13 22:05:49,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 253 transitions, 2256 flow [2022-07-13 22:05:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2887 transitions. [2022-07-13 22:05:49,291 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7811147186147186 [2022-07-13 22:05:49,291 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2887 transitions. [2022-07-13 22:05:49,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2887 transitions. [2022-07-13 22:05:49,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:49,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2887 transitions. [2022-07-13 22:05:49,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.47619047619048) internal successors, (2887), 21 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,296 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,296 INFO L186 Difference]: Start difference. First operand has 270 places, 195 transitions, 1074 flow. Second operand 21 states and 2887 transitions. [2022-07-13 22:05:49,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 253 transitions, 2256 flow [2022-07-13 22:05:49,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 253 transitions, 2065 flow, removed 82 selfloop flow, removed 13 redundant places. [2022-07-13 22:05:49,311 INFO L242 Difference]: Finished difference. Result has 279 places, 205 transitions, 1294 flow [2022-07-13 22:05:49,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1294, PETRI_PLACES=279, PETRI_TRANSITIONS=205} [2022-07-13 22:05:49,312 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 120 predicate places. [2022-07-13 22:05:49,312 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 205 transitions, 1294 flow [2022-07-13 22:05:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:49,313 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] [2022-07-13 22:05:49,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 22:05:49,313 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash 181054911, now seen corresponding path program 8 times [2022-07-13 22:05:49,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:49,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821370887] [2022-07-13 22:05:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:49,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:49,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:49,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821370887] [2022-07-13 22:05:49,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821370887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:49,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:49,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:49,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579646287] [2022-07-13 22:05:49,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:49,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:49,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:49,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:49,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:49,390 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:49,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 205 transitions, 1294 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:49,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:49,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:49,653 INFO L129 PetriNetUnfolder]: 107/708 cut-off events. [2022-07-13 22:05:49,654 INFO L130 PetriNetUnfolder]: For 5276/5293 co-relation queries the response was YES. [2022-07-13 22:05:49,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 708 events. 107/708 cut-off events. For 5276/5293 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3908 event pairs, 40 based on Foata normal form. 4/690 useless extension candidates. Maximal degree in co-relation 2651. Up to 172 conditions per place. [2022-07-13 22:05:49,660 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 77 selfloop transitions, 27 changer transitions 30/254 dead transitions. [2022-07-13 22:05:49,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 254 transitions, 2377 flow [2022-07-13 22:05:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2747 transitions. [2022-07-13 22:05:49,662 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7803977272727273 [2022-07-13 22:05:49,662 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2747 transitions. [2022-07-13 22:05:49,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2747 transitions. [2022-07-13 22:05:49,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:49,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2747 transitions. [2022-07-13 22:05:49,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.35) internal successors, (2747), 20 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,666 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,666 INFO L186 Difference]: Start difference. First operand has 279 places, 205 transitions, 1294 flow. Second operand 20 states and 2747 transitions. [2022-07-13 22:05:49,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 254 transitions, 2377 flow [2022-07-13 22:05:49,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 254 transitions, 2140 flow, removed 110 selfloop flow, removed 12 redundant places. [2022-07-13 22:05:49,710 INFO L242 Difference]: Finished difference. Result has 288 places, 213 transitions, 1448 flow [2022-07-13 22:05:49,710 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1448, PETRI_PLACES=288, PETRI_TRANSITIONS=213} [2022-07-13 22:05:49,711 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 129 predicate places. [2022-07-13 22:05:49,711 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 213 transitions, 1448 flow [2022-07-13 22:05:49,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,711 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:49,711 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] [2022-07-13 22:05:49,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 22:05:49,712 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:49,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:49,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1414141161, now seen corresponding path program 9 times [2022-07-13 22:05:49,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:49,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571071570] [2022-07-13 22:05:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:49,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:49,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:49,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571071570] [2022-07-13 22:05:49,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571071570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:49,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:49,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:49,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803575005] [2022-07-13 22:05:49,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:49,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:49,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:49,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:49,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:49,794 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:49,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 213 transitions, 1448 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:49,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:49,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:49,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:50,030 INFO L129 PetriNetUnfolder]: 94/653 cut-off events. [2022-07-13 22:05:50,030 INFO L130 PetriNetUnfolder]: For 4246/4255 co-relation queries the response was YES. [2022-07-13 22:05:50,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 653 events. 94/653 cut-off events. For 4246/4255 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3428 event pairs, 33 based on Foata normal form. 3/636 useless extension candidates. Maximal degree in co-relation 2350. Up to 158 conditions per place. [2022-07-13 22:05:50,036 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 18 changer transitions 30/240 dead transitions. [2022-07-13 22:05:50,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 240 transitions, 2074 flow [2022-07-13 22:05:50,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2467 transitions. [2022-07-13 22:05:50,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7787247474747475 [2022-07-13 22:05:50,038 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2467 transitions. [2022-07-13 22:05:50,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2467 transitions. [2022-07-13 22:05:50,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:50,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2467 transitions. [2022-07-13 22:05:50,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.05555555555554) internal successors, (2467), 18 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:50,042 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:50,042 INFO L186 Difference]: Start difference. First operand has 288 places, 213 transitions, 1448 flow. Second operand 18 states and 2467 transitions. [2022-07-13 22:05:50,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 240 transitions, 2074 flow [2022-07-13 22:05:50,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 240 transitions, 1884 flow, removed 70 selfloop flow, removed 16 redundant places. [2022-07-13 22:05:50,058 INFO L242 Difference]: Finished difference. Result has 284 places, 198 transitions, 1165 flow [2022-07-13 22:05:50,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1165, PETRI_PLACES=284, PETRI_TRANSITIONS=198} [2022-07-13 22:05:50,059 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 125 predicate places. [2022-07-13 22:05:50,059 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 198 transitions, 1165 flow [2022-07-13 22:05:50,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,059 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:50,059 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] [2022-07-13 22:05:50,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 22:05:50,060 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:50,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1457045623, now seen corresponding path program 10 times [2022-07-13 22:05:50,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:50,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981703716] [2022-07-13 22:05:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:50,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:50,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:50,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981703716] [2022-07-13 22:05:50,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981703716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:50,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:50,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:50,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522200952] [2022-07-13 22:05:50,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:50,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:50,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:50,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:50,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:50,133 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:50,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 198 transitions, 1165 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:50,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:50,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:50,381 INFO L129 PetriNetUnfolder]: 99/670 cut-off events. [2022-07-13 22:05:50,381 INFO L130 PetriNetUnfolder]: For 3956/3971 co-relation queries the response was YES. [2022-07-13 22:05:50,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 670 events. 99/670 cut-off events. For 3956/3971 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3565 event pairs, 36 based on Foata normal form. 3/652 useless extension candidates. Maximal degree in co-relation 2367. Up to 160 conditions per place. [2022-07-13 22:05:50,387 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 24 changer transitions 24/239 dead transitions. [2022-07-13 22:05:50,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 239 transitions, 1992 flow [2022-07-13 22:05:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2343 transitions. [2022-07-13 22:05:50,388 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7830882352941176 [2022-07-13 22:05:50,389 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2343 transitions. [2022-07-13 22:05:50,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2343 transitions. [2022-07-13 22:05:50,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:50,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2343 transitions. [2022-07-13 22:05:50,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.8235294117647) internal successors, (2343), 17 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,393 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,393 INFO L186 Difference]: Start difference. First operand has 284 places, 198 transitions, 1165 flow. Second operand 17 states and 2343 transitions. [2022-07-13 22:05:50,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 239 transitions, 1992 flow [2022-07-13 22:05:50,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 239 transitions, 1827 flow, removed 32 selfloop flow, removed 15 redundant places. [2022-07-13 22:05:50,406 INFO L242 Difference]: Finished difference. Result has 272 places, 206 transitions, 1296 flow [2022-07-13 22:05:50,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1296, PETRI_PLACES=272, PETRI_TRANSITIONS=206} [2022-07-13 22:05:50,407 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 113 predicate places. [2022-07-13 22:05:50,407 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 206 transitions, 1296 flow [2022-07-13 22:05:50,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,408 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:50,408 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] [2022-07-13 22:05:50,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 22:05:50,408 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1870034335, now seen corresponding path program 11 times [2022-07-13 22:05:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:50,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119058216] [2022-07-13 22:05:50,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:50,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:50,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:50,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119058216] [2022-07-13 22:05:50,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119058216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:50,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:50,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:50,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590403209] [2022-07-13 22:05:50,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:50,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:50,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:50,487 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:50,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 206 transitions, 1296 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:50,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:50,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:50,735 INFO L129 PetriNetUnfolder]: 96/674 cut-off events. [2022-07-13 22:05:50,736 INFO L130 PetriNetUnfolder]: For 3491/3498 co-relation queries the response was YES. [2022-07-13 22:05:50,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 674 events. 96/674 cut-off events. For 3491/3498 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3594 event pairs, 39 based on Foata normal form. 1/654 useless extension candidates. Maximal degree in co-relation 2335. Up to 162 conditions per place. [2022-07-13 22:05:50,740 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 27 changer transitions 24/243 dead transitions. [2022-07-13 22:05:50,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 243 transitions, 2090 flow [2022-07-13 22:05:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2341 transitions. [2022-07-13 22:05:50,742 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7824197860962567 [2022-07-13 22:05:50,742 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2341 transitions. [2022-07-13 22:05:50,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2341 transitions. [2022-07-13 22:05:50,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:50,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2341 transitions. [2022-07-13 22:05:50,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.7058823529412) internal successors, (2341), 17 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,746 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,746 INFO L186 Difference]: Start difference. First operand has 272 places, 206 transitions, 1296 flow. Second operand 17 states and 2341 transitions. [2022-07-13 22:05:50,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 243 transitions, 2090 flow [2022-07-13 22:05:50,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 243 transitions, 1968 flow, removed 35 selfloop flow, removed 10 redundant places. [2022-07-13 22:05:50,760 INFO L242 Difference]: Finished difference. Result has 280 places, 214 transitions, 1451 flow [2022-07-13 22:05:50,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1451, PETRI_PLACES=280, PETRI_TRANSITIONS=214} [2022-07-13 22:05:50,760 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-07-13 22:05:50,760 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 214 transitions, 1451 flow [2022-07-13 22:05:50,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,761 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:50,761 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:50,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 22:05:50,761 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:50,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash -264747361, now seen corresponding path program 12 times [2022-07-13 22:05:50,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:50,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922251626] [2022-07-13 22:05:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:50,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:50,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:50,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922251626] [2022-07-13 22:05:50,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922251626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:50,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:50,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022484998] [2022-07-13 22:05:50,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:50,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:50,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:50,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:50,834 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:50,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 214 transitions, 1451 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:50,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:50,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:50,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:51,078 INFO L129 PetriNetUnfolder]: 88/645 cut-off events. [2022-07-13 22:05:51,078 INFO L130 PetriNetUnfolder]: For 2921/2928 co-relation queries the response was YES. [2022-07-13 22:05:51,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2215 conditions, 645 events. 88/645 cut-off events. For 2921/2928 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3371 event pairs, 37 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 2136. Up to 154 conditions per place. [2022-07-13 22:05:51,083 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 69 selfloop transitions, 16 changer transitions 30/235 dead transitions. [2022-07-13 22:05:51,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 235 transitions, 1916 flow [2022-07-13 22:05:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2472 transitions. [2022-07-13 22:05:51,085 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7803030303030303 [2022-07-13 22:05:51,085 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2472 transitions. [2022-07-13 22:05:51,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2472 transitions. [2022-07-13 22:05:51,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:51,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2472 transitions. [2022-07-13 22:05:51,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.33333333333334) internal successors, (2472), 18 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:51,089 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:51,090 INFO L186 Difference]: Start difference. First operand has 280 places, 214 transitions, 1451 flow. Second operand 18 states and 2472 transitions. [2022-07-13 22:05:51,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 235 transitions, 1916 flow [2022-07-13 22:05:51,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 235 transitions, 1809 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-13 22:05:51,104 INFO L242 Difference]: Finished difference. Result has 286 places, 200 transitions, 1180 flow [2022-07-13 22:05:51,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1180, PETRI_PLACES=286, PETRI_TRANSITIONS=200} [2022-07-13 22:05:51,105 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 127 predicate places. [2022-07-13 22:05:51,105 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 200 transitions, 1180 flow [2022-07-13 22:05:51,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,106 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:51,106 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] [2022-07-13 22:05:51,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-13 22:05:51,106 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash -873208415, now seen corresponding path program 13 times [2022-07-13 22:05:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:51,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097656911] [2022-07-13 22:05:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:51,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:51,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:51,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097656911] [2022-07-13 22:05:51,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097656911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:51,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:51,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:51,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510543529] [2022-07-13 22:05:51,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:51,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:51,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:51,191 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:51,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 200 transitions, 1180 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:51,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:51,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:51,418 INFO L129 PetriNetUnfolder]: 75/576 cut-off events. [2022-07-13 22:05:51,418 INFO L130 PetriNetUnfolder]: For 2388/2403 co-relation queries the response was YES. [2022-07-13 22:05:51,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 576 events. 75/576 cut-off events. For 2388/2403 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2778 event pairs, 33 based on Foata normal form. 3/560 useless extension candidates. Maximal degree in co-relation 1783. Up to 145 conditions per place. [2022-07-13 22:05:51,423 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 5 changer transitions 29/213 dead transitions. [2022-07-13 22:05:51,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 213 transitions, 1501 flow [2022-07-13 22:05:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:51,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:51,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2461 transitions. [2022-07-13 22:05:51,425 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7768308080808081 [2022-07-13 22:05:51,425 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2461 transitions. [2022-07-13 22:05:51,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2461 transitions. [2022-07-13 22:05:51,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:51,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2461 transitions. [2022-07-13 22:05:51,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.72222222222223) internal successors, (2461), 18 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:51,429 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:51,429 INFO L186 Difference]: Start difference. First operand has 286 places, 200 transitions, 1180 flow. Second operand 18 states and 2461 transitions. [2022-07-13 22:05:51,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 213 transitions, 1501 flow [2022-07-13 22:05:51,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 213 transitions, 1382 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-07-13 22:05:51,441 INFO L242 Difference]: Finished difference. Result has 273 places, 180 transitions, 842 flow [2022-07-13 22:05:51,441 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=842, PETRI_PLACES=273, PETRI_TRANSITIONS=180} [2022-07-13 22:05:51,441 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2022-07-13 22:05:51,441 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 180 transitions, 842 flow [2022-07-13 22:05:51,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,442 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:51,442 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] [2022-07-13 22:05:51,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-13 22:05:51,442 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:51,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1784959983, now seen corresponding path program 14 times [2022-07-13 22:05:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:51,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373119009] [2022-07-13 22:05:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:51,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:51,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:51,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373119009] [2022-07-13 22:05:51,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373119009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:51,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:51,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:51,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691631377] [2022-07-13 22:05:51,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:51,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:51,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:51,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:51,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:51,520 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:51,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 180 transitions, 842 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:51,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:51,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:51,807 INFO L129 PetriNetUnfolder]: 77/619 cut-off events. [2022-07-13 22:05:51,807 INFO L130 PetriNetUnfolder]: For 1864/1869 co-relation queries the response was YES. [2022-07-13 22:05:51,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 619 events. 77/619 cut-off events. For 1864/1869 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3184 event pairs, 33 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 1776. Up to 126 conditions per place. [2022-07-13 22:05:51,811 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 21 changer transitions 30/225 dead transitions. [2022-07-13 22:05:51,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 225 transitions, 1555 flow [2022-07-13 22:05:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3011 transitions. [2022-07-13 22:05:51,813 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7776342975206612 [2022-07-13 22:05:51,813 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3011 transitions. [2022-07-13 22:05:51,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3011 transitions. [2022-07-13 22:05:51,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:51,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3011 transitions. [2022-07-13 22:05:51,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 136.86363636363637) internal successors, (3011), 22 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,818 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,818 INFO L186 Difference]: Start difference. First operand has 273 places, 180 transitions, 842 flow. Second operand 22 states and 3011 transitions. [2022-07-13 22:05:51,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 225 transitions, 1555 flow [2022-07-13 22:05:51,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 225 transitions, 1406 flow, removed 30 selfloop flow, removed 21 redundant places. [2022-07-13 22:05:51,826 INFO L242 Difference]: Finished difference. Result has 259 places, 185 transitions, 914 flow [2022-07-13 22:05:51,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=914, PETRI_PLACES=259, PETRI_TRANSITIONS=185} [2022-07-13 22:05:51,827 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 100 predicate places. [2022-07-13 22:05:51,827 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 185 transitions, 914 flow [2022-07-13 22:05:51,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,827 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:51,828 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] [2022-07-13 22:05:51,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 22:05:51,828 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:51,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:51,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1090332437, now seen corresponding path program 15 times [2022-07-13 22:05:51,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:51,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495699685] [2022-07-13 22:05:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:51,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:51,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495699685] [2022-07-13 22:05:51,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495699685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:51,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:51,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:51,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402369078] [2022-07-13 22:05:51,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:51,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:51,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:51,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:51,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:51,905 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:51,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 185 transitions, 914 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:51,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:51,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:51,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:52,110 INFO L129 PetriNetUnfolder]: 78/612 cut-off events. [2022-07-13 22:05:52,110 INFO L130 PetriNetUnfolder]: For 1916/1921 co-relation queries the response was YES. [2022-07-13 22:05:52,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1886 conditions, 612 events. 78/612 cut-off events. For 1916/1921 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3133 event pairs, 32 based on Foata normal form. 1/595 useless extension candidates. Maximal degree in co-relation 1817. Up to 133 conditions per place. [2022-07-13 22:05:52,115 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 55 selfloop transitions, 27 changer transitions 23/225 dead transitions. [2022-07-13 22:05:52,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 225 transitions, 1600 flow [2022-07-13 22:05:52,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:52,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2336 transitions. [2022-07-13 22:05:52,117 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7807486631016043 [2022-07-13 22:05:52,117 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2336 transitions. [2022-07-13 22:05:52,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2336 transitions. [2022-07-13 22:05:52,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:52,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2336 transitions. [2022-07-13 22:05:52,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.41176470588235) internal successors, (2336), 17 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,121 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,121 INFO L186 Difference]: Start difference. First operand has 259 places, 185 transitions, 914 flow. Second operand 17 states and 2336 transitions. [2022-07-13 22:05:52,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 225 transitions, 1600 flow [2022-07-13 22:05:52,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 225 transitions, 1514 flow, removed 30 selfloop flow, removed 13 redundant places. [2022-07-13 22:05:52,130 INFO L242 Difference]: Finished difference. Result has 258 places, 193 transitions, 1069 flow [2022-07-13 22:05:52,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1069, PETRI_PLACES=258, PETRI_TRANSITIONS=193} [2022-07-13 22:05:52,131 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-13 22:05:52,131 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 193 transitions, 1069 flow [2022-07-13 22:05:52,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,131 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:52,131 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] [2022-07-13 22:05:52,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 22:05:52,131 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:52,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:52,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2132873829, now seen corresponding path program 16 times [2022-07-13 22:05:52,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:52,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842366937] [2022-07-13 22:05:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:52,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:52,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:52,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842366937] [2022-07-13 22:05:52,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842366937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:52,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:52,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766334950] [2022-07-13 22:05:52,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:52,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:52,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:52,212 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:52,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 193 transitions, 1069 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:52,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:52,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:52,422 INFO L129 PetriNetUnfolder]: 68/574 cut-off events. [2022-07-13 22:05:52,423 INFO L130 PetriNetUnfolder]: For 1750/1755 co-relation queries the response was YES. [2022-07-13 22:05:52,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 574 events. 68/574 cut-off events. For 1750/1755 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2811 event pairs, 33 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 1684. Up to 127 conditions per place. [2022-07-13 22:05:52,426 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 52 selfloop transitions, 12 changer transitions 29/213 dead transitions. [2022-07-13 22:05:52,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 213 transitions, 1447 flow [2022-07-13 22:05:52,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2465 transitions. [2022-07-13 22:05:52,428 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7780934343434344 [2022-07-13 22:05:52,429 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2465 transitions. [2022-07-13 22:05:52,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2465 transitions. [2022-07-13 22:05:52,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:52,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2465 transitions. [2022-07-13 22:05:52,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.94444444444446) internal successors, (2465), 18 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:52,432 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:52,432 INFO L186 Difference]: Start difference. First operand has 258 places, 193 transitions, 1069 flow. Second operand 18 states and 2465 transitions. [2022-07-13 22:05:52,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 213 transitions, 1447 flow [2022-07-13 22:05:52,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 213 transitions, 1347 flow, removed 28 selfloop flow, removed 9 redundant places. [2022-07-13 22:05:52,442 INFO L242 Difference]: Finished difference. Result has 265 places, 178 transitions, 821 flow [2022-07-13 22:05:52,442 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=821, PETRI_PLACES=265, PETRI_TRANSITIONS=178} [2022-07-13 22:05:52,442 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 106 predicate places. [2022-07-13 22:05:52,442 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 178 transitions, 821 flow [2022-07-13 22:05:52,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,443 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:52,443 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] [2022-07-13 22:05:52,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 22:05:52,443 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash 919394503, now seen corresponding path program 17 times [2022-07-13 22:05:52,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:52,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793750649] [2022-07-13 22:05:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:52,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:52,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:52,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793750649] [2022-07-13 22:05:52,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793750649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:52,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:52,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:52,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022666672] [2022-07-13 22:05:52,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:52,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:52,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:52,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:52,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:52,521 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:52,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 178 transitions, 821 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:52,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:52,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:52,794 INFO L129 PetriNetUnfolder]: 67/553 cut-off events. [2022-07-13 22:05:52,795 INFO L130 PetriNetUnfolder]: For 1743/1748 co-relation queries the response was YES. [2022-07-13 22:05:52,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 553 events. 67/553 cut-off events. For 1743/1748 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2619 event pairs, 32 based on Foata normal form. 1/535 useless extension candidates. Maximal degree in co-relation 1625. Up to 117 conditions per place. [2022-07-13 22:05:52,797 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 48 selfloop transitions, 19 changer transitions 30/217 dead transitions. [2022-07-13 22:05:52,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 217 transitions, 1526 flow [2022-07-13 22:05:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:52,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:52,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2875 transitions. [2022-07-13 22:05:52,800 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7778679653679653 [2022-07-13 22:05:52,800 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2875 transitions. [2022-07-13 22:05:52,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2875 transitions. [2022-07-13 22:05:52,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:52,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2875 transitions. [2022-07-13 22:05:52,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 136.9047619047619) internal successors, (2875), 21 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,804 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,804 INFO L186 Difference]: Start difference. First operand has 265 places, 178 transitions, 821 flow. Second operand 21 states and 2875 transitions. [2022-07-13 22:05:52,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 217 transitions, 1526 flow [2022-07-13 22:05:52,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 217 transitions, 1360 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-13 22:05:52,812 INFO L242 Difference]: Finished difference. Result has 258 places, 182 transitions, 903 flow [2022-07-13 22:05:52,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=903, PETRI_PLACES=258, PETRI_TRANSITIONS=182} [2022-07-13 22:05:52,813 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-13 22:05:52,813 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 182 transitions, 903 flow [2022-07-13 22:05:52,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,813 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:52,813 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] [2022-07-13 22:05:52,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-13 22:05:52,814 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:52,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1815134357, now seen corresponding path program 18 times [2022-07-13 22:05:52,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:52,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290369092] [2022-07-13 22:05:52,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:52,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:52,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:52,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290369092] [2022-07-13 22:05:52,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290369092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:52,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:52,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:52,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43080206] [2022-07-13 22:05:52,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:52,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:52,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:52,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:52,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:52,890 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:52,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 182 transitions, 903 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:52,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:52,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:52,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:53,091 INFO L129 PetriNetUnfolder]: 62/537 cut-off events. [2022-07-13 22:05:53,091 INFO L130 PetriNetUnfolder]: For 1725/1730 co-relation queries the response was YES. [2022-07-13 22:05:53,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 537 events. 62/537 cut-off events. For 1725/1730 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2485 event pairs, 32 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 1557. Up to 122 conditions per place. [2022-07-13 22:05:53,095 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 44 selfloop transitions, 21 changer transitions 26/211 dead transitions. [2022-07-13 22:05:53,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 211 transitions, 1453 flow [2022-07-13 22:05:53,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:53,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:53,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2470 transitions. [2022-07-13 22:05:53,096 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7796717171717171 [2022-07-13 22:05:53,096 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2470 transitions. [2022-07-13 22:05:53,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2470 transitions. [2022-07-13 22:05:53,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:53,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2470 transitions. [2022-07-13 22:05:53,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.22222222222223) internal successors, (2470), 18 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:53,100 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:53,100 INFO L186 Difference]: Start difference. First operand has 258 places, 182 transitions, 903 flow. Second operand 18 states and 2470 transitions. [2022-07-13 22:05:53,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 211 transitions, 1453 flow [2022-07-13 22:05:53,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 211 transitions, 1338 flow, removed 43 selfloop flow, removed 14 redundant places. [2022-07-13 22:05:53,109 INFO L242 Difference]: Finished difference. Result has 253 places, 183 transitions, 928 flow [2022-07-13 22:05:53,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=928, PETRI_PLACES=253, PETRI_TRANSITIONS=183} [2022-07-13 22:05:53,110 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-07-13 22:05:53,110 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 183 transitions, 928 flow [2022-07-13 22:05:53,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,110 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:53,110 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] [2022-07-13 22:05:53,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-13 22:05:53,111 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash 168894361, now seen corresponding path program 19 times [2022-07-13 22:05:53,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:53,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376476683] [2022-07-13 22:05:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:53,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:53,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:53,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376476683] [2022-07-13 22:05:53,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376476683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:53,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:53,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:53,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789869507] [2022-07-13 22:05:53,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:53,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:53,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:53,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:53,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:53,185 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:53,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 183 transitions, 928 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:53,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:53,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:53,386 INFO L129 PetriNetUnfolder]: 60/534 cut-off events. [2022-07-13 22:05:53,386 INFO L130 PetriNetUnfolder]: For 1345/1350 co-relation queries the response was YES. [2022-07-13 22:05:53,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 534 events. 60/534 cut-off events. For 1345/1350 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2494 event pairs, 35 based on Foata normal form. 1/516 useless extension candidates. Maximal degree in co-relation 1467. Up to 121 conditions per place. [2022-07-13 22:05:53,390 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 42 selfloop transitions, 13 changer transitions 28/203 dead transitions. [2022-07-13 22:05:53,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 203 transitions, 1275 flow [2022-07-13 22:05:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:53,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2467 transitions. [2022-07-13 22:05:53,392 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7787247474747475 [2022-07-13 22:05:53,392 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2467 transitions. [2022-07-13 22:05:53,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2467 transitions. [2022-07-13 22:05:53,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:53,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2467 transitions. [2022-07-13 22:05:53,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.05555555555554) internal successors, (2467), 18 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:53,395 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 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) [2022-07-13 22:05:53,395 INFO L186 Difference]: Start difference. First operand has 253 places, 183 transitions, 928 flow. Second operand 18 states and 2467 transitions. [2022-07-13 22:05:53,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 203 transitions, 1275 flow [2022-07-13 22:05:53,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 203 transitions, 1138 flow, removed 37 selfloop flow, removed 14 redundant places. [2022-07-13 22:05:53,403 INFO L242 Difference]: Finished difference. Result has 255 places, 174 transitions, 754 flow [2022-07-13 22:05:53,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=754, PETRI_PLACES=255, PETRI_TRANSITIONS=174} [2022-07-13 22:05:53,404 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 96 predicate places. [2022-07-13 22:05:53,404 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 174 transitions, 754 flow [2022-07-13 22:05:53,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,404 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:53,404 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] [2022-07-13 22:05:53,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-13 22:05:53,404 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:53,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:53,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1082336479, now seen corresponding path program 20 times [2022-07-13 22:05:53,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:53,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973683121] [2022-07-13 22:05:53,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:53,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:53,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:53,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973683121] [2022-07-13 22:05:53,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973683121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:53,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:53,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:53,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069148219] [2022-07-13 22:05:53,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:53,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:53,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:53,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:53,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:53,481 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-13 22:05:53,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 174 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:53,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-13 22:05:53,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:53,659 INFO L129 PetriNetUnfolder]: 48/440 cut-off events. [2022-07-13 22:05:53,659 INFO L130 PetriNetUnfolder]: For 836/841 co-relation queries the response was YES. [2022-07-13 22:05:53,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 440 events. 48/440 cut-off events. For 836/841 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1801 event pairs, 29 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1090. Up to 100 conditions per place. [2022-07-13 22:05:53,662 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 29 selfloop transitions, 0 changer transitions 40/183 dead transitions. [2022-07-13 22:05:53,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 183 transitions, 918 flow [2022-07-13 22:05:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2322 transitions. [2022-07-13 22:05:53,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7760695187165776 [2022-07-13 22:05:53,664 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2322 transitions. [2022-07-13 22:05:53,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2322 transitions. [2022-07-13 22:05:53,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:53,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2322 transitions. [2022-07-13 22:05:53,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 136.58823529411765) internal successors, (2322), 17 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,667 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,667 INFO L186 Difference]: Start difference. First operand has 255 places, 174 transitions, 754 flow. Second operand 17 states and 2322 transitions. [2022-07-13 22:05:53,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 183 transitions, 918 flow [2022-07-13 22:05:53,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 183 transitions, 828 flow, removed 21 selfloop flow, removed 19 redundant places. [2022-07-13 22:05:53,673 INFO L242 Difference]: Finished difference. Result has 238 places, 143 transitions, 394 flow [2022-07-13 22:05:53,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=394, PETRI_PLACES=238, PETRI_TRANSITIONS=143} [2022-07-13 22:05:53,673 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 79 predicate places. [2022-07-13 22:05:53,674 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 143 transitions, 394 flow [2022-07-13 22:05:53,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,674 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:53,674 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:53,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-13 22:05:53,674 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash 191306843, now seen corresponding path program 1 times [2022-07-13 22:05:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:53,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116719116] [2022-07-13 22:05:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:54,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:54,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116719116] [2022-07-13 22:05:54,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116719116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:54,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:54,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:05:54,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847664848] [2022-07-13 22:05:54,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:54,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:05:54,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:05:54,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:05:54,095 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:05:54,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 143 transitions, 394 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:54,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:05:54,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:56,193 INFO L129 PetriNetUnfolder]: 387/1388 cut-off events. [2022-07-13 22:05:56,194 INFO L130 PetriNetUnfolder]: For 1577/1579 co-relation queries the response was YES. [2022-07-13 22:05:56,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3221 conditions, 1388 events. 387/1388 cut-off events. For 1577/1579 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8118 event pairs, 18 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 3170. Up to 141 conditions per place. [2022-07-13 22:05:56,201 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 184 selfloop transitions, 35 changer transitions 39/345 dead transitions. [2022-07-13 22:05:56,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 345 transitions, 1811 flow [2022-07-13 22:05:56,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 22:05:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-13 22:05:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4208 transitions. [2022-07-13 22:05:56,204 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6461916461916462 [2022-07-13 22:05:56,204 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4208 transitions. [2022-07-13 22:05:56,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4208 transitions. [2022-07-13 22:05:56,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:56,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4208 transitions. [2022-07-13 22:05:56,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 113.72972972972973) internal successors, (4208), 37 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,211 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,211 INFO L186 Difference]: Start difference. First operand has 238 places, 143 transitions, 394 flow. Second operand 37 states and 4208 transitions. [2022-07-13 22:05:56,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 345 transitions, 1811 flow [2022-07-13 22:05:56,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 345 transitions, 1641 flow, removed 84 selfloop flow, removed 11 redundant places. [2022-07-13 22:05:56,217 INFO L242 Difference]: Finished difference. Result has 249 places, 170 transitions, 710 flow [2022-07-13 22:05:56,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=710, PETRI_PLACES=249, PETRI_TRANSITIONS=170} [2022-07-13 22:05:56,218 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-13 22:05:56,218 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 170 transitions, 710 flow [2022-07-13 22:05:56,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,219 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:56,219 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:56,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-13 22:05:56,219 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:56,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1559427641, now seen corresponding path program 2 times [2022-07-13 22:05:56,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:56,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104226391] [2022-07-13 22:05:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:56,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:56,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104226391] [2022-07-13 22:05:56,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104226391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:56,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:56,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:05:56,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169705692] [2022-07-13 22:05:56,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:56,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:05:56,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:56,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:05:56,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:05:56,643 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:05:56,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 170 transitions, 710 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:56,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:56,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:05:56,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:58,799 INFO L129 PetriNetUnfolder]: 415/1486 cut-off events. [2022-07-13 22:05:58,800 INFO L130 PetriNetUnfolder]: For 5572/5574 co-relation queries the response was YES. [2022-07-13 22:05:58,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4515 conditions, 1486 events. 415/1486 cut-off events. For 5572/5574 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8885 event pairs, 34 based on Foata normal form. 1/1433 useless extension candidates. Maximal degree in co-relation 4445. Up to 136 conditions per place. [2022-07-13 22:05:58,809 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 192 selfloop transitions, 47 changer transitions 39/365 dead transitions. [2022-07-13 22:05:58,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 365 transitions, 2582 flow [2022-07-13 22:05:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:05:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:05:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3991 transitions. [2022-07-13 22:05:58,812 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6478896103896103 [2022-07-13 22:05:58,812 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3991 transitions. [2022-07-13 22:05:58,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3991 transitions. [2022-07-13 22:05:58,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:58,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3991 transitions. [2022-07-13 22:05:58,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.02857142857142) internal successors, (3991), 35 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,818 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,818 INFO L186 Difference]: Start difference. First operand has 249 places, 170 transitions, 710 flow. Second operand 35 states and 3991 transitions. [2022-07-13 22:05:58,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 365 transitions, 2582 flow [2022-07-13 22:05:58,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 365 transitions, 2147 flow, removed 171 selfloop flow, removed 21 redundant places. [2022-07-13 22:05:58,832 INFO L242 Difference]: Finished difference. Result has 269 places, 192 transitions, 1036 flow [2022-07-13 22:05:58,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1036, PETRI_PLACES=269, PETRI_TRANSITIONS=192} [2022-07-13 22:05:58,832 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-13 22:05:58,832 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 192 transitions, 1036 flow [2022-07-13 22:05:58,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:58,833 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:58,833 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:58,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-13 22:05:58,833 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:58,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:58,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1306737223, now seen corresponding path program 3 times [2022-07-13 22:05:58,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:58,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646000044] [2022-07-13 22:05:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:58,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:59,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:59,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646000044] [2022-07-13 22:05:59,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646000044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:59,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:59,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:05:59,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497934011] [2022-07-13 22:05:59,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:59,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:05:59,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:59,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:05:59,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:05:59,239 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:05:59,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 192 transitions, 1036 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:59,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:59,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:05:59,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:03,431 INFO L129 PetriNetUnfolder]: 460/1585 cut-off events. [2022-07-13 22:06:03,432 INFO L130 PetriNetUnfolder]: For 5028/5030 co-relation queries the response was YES. [2022-07-13 22:06:03,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5108 conditions, 1585 events. 460/1585 cut-off events. For 5028/5030 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9843 event pairs, 12 based on Foata normal form. 1/1562 useless extension candidates. Maximal degree in co-relation 5030. Up to 117 conditions per place. [2022-07-13 22:06:03,445 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 274 selfloop transitions, 35 changer transitions 124/520 dead transitions. [2022-07-13 22:06:03,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 520 transitions, 3984 flow [2022-07-13 22:06:03,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-13 22:06:03,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-07-13 22:06:03,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 7313 transitions. [2022-07-13 22:06:03,449 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6392482517482517 [2022-07-13 22:06:03,450 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 7313 transitions. [2022-07-13 22:06:03,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 7313 transitions. [2022-07-13 22:06:03,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:03,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 7313 transitions. [2022-07-13 22:06:03,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 112.50769230769231) internal successors, (7313), 65 states have internal predecessors, (7313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,462 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,462 INFO L186 Difference]: Start difference. First operand has 269 places, 192 transitions, 1036 flow. Second operand 65 states and 7313 transitions. [2022-07-13 22:06:03,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 520 transitions, 3984 flow [2022-07-13 22:06:03,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 520 transitions, 3310 flow, removed 156 selfloop flow, removed 20 redundant places. [2022-07-13 22:06:03,482 INFO L242 Difference]: Finished difference. Result has 351 places, 192 transitions, 956 flow [2022-07-13 22:06:03,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=956, PETRI_PLACES=351, PETRI_TRANSITIONS=192} [2022-07-13 22:06:03,483 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 192 predicate places. [2022-07-13 22:06:03,483 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 192 transitions, 956 flow [2022-07-13 22:06:03,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,483 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:03,483 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:03,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-13 22:06:03,484 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:03,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:03,484 INFO L85 PathProgramCache]: Analyzing trace with hash 715640743, now seen corresponding path program 4 times [2022-07-13 22:06:03,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:03,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839727672] [2022-07-13 22:06:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:03,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:03,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:03,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839727672] [2022-07-13 22:06:03,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839727672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:03,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:03,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:03,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774683266] [2022-07-13 22:06:03,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:03,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:03,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:03,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:03,886 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:03,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 192 transitions, 956 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:03,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:03,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:03,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:06,339 INFO L129 PetriNetUnfolder]: 504/1773 cut-off events. [2022-07-13 22:06:06,339 INFO L130 PetriNetUnfolder]: For 10024/10026 co-relation queries the response was YES. [2022-07-13 22:06:06,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 1773 events. 504/1773 cut-off events. For 10024/10026 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 11149 event pairs, 62 based on Foata normal form. 1/1715 useless extension candidates. Maximal degree in co-relation 6450. Up to 199 conditions per place. [2022-07-13 22:06:06,355 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 232 selfloop transitions, 41 changer transitions 44/404 dead transitions. [2022-07-13 22:06:06,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 404 transitions, 3417 flow [2022-07-13 22:06:06,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:06:06,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:06:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4007 transitions. [2022-07-13 22:06:06,358 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.650487012987013 [2022-07-13 22:06:06,359 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4007 transitions. [2022-07-13 22:06:06,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4007 transitions. [2022-07-13 22:06:06,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:06,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4007 transitions. [2022-07-13 22:06:06,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.48571428571428) internal successors, (4007), 35 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,365 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,365 INFO L186 Difference]: Start difference. First operand has 351 places, 192 transitions, 956 flow. Second operand 35 states and 4007 transitions. [2022-07-13 22:06:06,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 404 transitions, 3417 flow [2022-07-13 22:06:06,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 404 transitions, 2909 flow, removed 115 selfloop flow, removed 60 redundant places. [2022-07-13 22:06:06,387 INFO L242 Difference]: Finished difference. Result has 298 places, 216 transitions, 1315 flow [2022-07-13 22:06:06,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1315, PETRI_PLACES=298, PETRI_TRANSITIONS=216} [2022-07-13 22:06:06,388 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 139 predicate places. [2022-07-13 22:06:06,388 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 216 transitions, 1315 flow [2022-07-13 22:06:06,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,389 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:06,389 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:06,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-13 22:06:06,389 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:06,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash 580382619, now seen corresponding path program 5 times [2022-07-13 22:06:06,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:06,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119358508] [2022-07-13 22:06:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:06,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:06,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119358508] [2022-07-13 22:06:06,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119358508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:06,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:06,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611957644] [2022-07-13 22:06:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:06,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:06,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:06,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:06,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:06,794 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:06,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 216 transitions, 1315 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:06,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:06,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:06,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:09,050 INFO L129 PetriNetUnfolder]: 631/2162 cut-off events. [2022-07-13 22:06:09,050 INFO L130 PetriNetUnfolder]: For 12409/12411 co-relation queries the response was YES. [2022-07-13 22:06:09,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8088 conditions, 2162 events. 631/2162 cut-off events. For 12409/12411 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 14432 event pairs, 102 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 7994. Up to 351 conditions per place. [2022-07-13 22:06:09,070 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 269 selfloop transitions, 46 changer transitions 36/438 dead transitions. [2022-07-13 22:06:09,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 438 transitions, 3868 flow [2022-07-13 22:06:09,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:06:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:06:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4004 transitions. [2022-07-13 22:06:09,072 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.65 [2022-07-13 22:06:09,073 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4004 transitions. [2022-07-13 22:06:09,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4004 transitions. [2022-07-13 22:06:09,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:09,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4004 transitions. [2022-07-13 22:06:09,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.4) internal successors, (4004), 35 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:09,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:09,079 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:09,079 INFO L186 Difference]: Start difference. First operand has 298 places, 216 transitions, 1315 flow. Second operand 35 states and 4004 transitions. [2022-07-13 22:06:09,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 438 transitions, 3868 flow [2022-07-13 22:06:09,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 438 transitions, 3349 flow, removed 178 selfloop flow, removed 19 redundant places. [2022-07-13 22:06:09,112 INFO L242 Difference]: Finished difference. Result has 325 places, 243 transitions, 1560 flow [2022-07-13 22:06:09,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1560, PETRI_PLACES=325, PETRI_TRANSITIONS=243} [2022-07-13 22:06:09,113 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 166 predicate places. [2022-07-13 22:06:09,113 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 243 transitions, 1560 flow [2022-07-13 22:06:09,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:09,114 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:09,114 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:09,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-13 22:06:09,114 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:09,115 INFO L85 PathProgramCache]: Analyzing trace with hash 640294289, now seen corresponding path program 6 times [2022-07-13 22:06:09,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:09,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342622743] [2022-07-13 22:06:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:09,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:09,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:09,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342622743] [2022-07-13 22:06:09,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342622743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:09,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:09,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:09,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453801786] [2022-07-13 22:06:09,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:09,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:09,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:09,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:09,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:09,519 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:09,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 243 transitions, 1560 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:09,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:09,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:09,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:12,200 INFO L129 PetriNetUnfolder]: 899/2991 cut-off events. [2022-07-13 22:06:12,215 INFO L130 PetriNetUnfolder]: For 20276/20278 co-relation queries the response was YES. [2022-07-13 22:06:12,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11851 conditions, 2991 events. 899/2991 cut-off events. For 20276/20278 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 22288 event pairs, 182 based on Foata normal form. 1/2899 useless extension candidates. Maximal degree in co-relation 11743. Up to 834 conditions per place. [2022-07-13 22:06:12,261 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 325 selfloop transitions, 58 changer transitions 39/509 dead transitions. [2022-07-13 22:06:12,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 509 transitions, 5165 flow [2022-07-13 22:06:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:06:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:06:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4024 transitions. [2022-07-13 22:06:12,277 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6532467532467533 [2022-07-13 22:06:12,278 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4024 transitions. [2022-07-13 22:06:12,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4024 transitions. [2022-07-13 22:06:12,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:12,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4024 transitions. [2022-07-13 22:06:12,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.97142857142858) internal successors, (4024), 35 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,286 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,286 INFO L186 Difference]: Start difference. First operand has 325 places, 243 transitions, 1560 flow. Second operand 35 states and 4024 transitions. [2022-07-13 22:06:12,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 509 transitions, 5165 flow [2022-07-13 22:06:12,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 509 transitions, 4707 flow, removed 176 selfloop flow, removed 19 redundant places. [2022-07-13 22:06:12,422 INFO L242 Difference]: Finished difference. Result has 357 places, 274 transitions, 2132 flow [2022-07-13 22:06:12,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2132, PETRI_PLACES=357, PETRI_TRANSITIONS=274} [2022-07-13 22:06:12,422 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 198 predicate places. [2022-07-13 22:06:12,422 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 274 transitions, 2132 flow [2022-07-13 22:06:12,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,423 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:12,423 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:12,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-13 22:06:12,423 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:12,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1506690079, now seen corresponding path program 7 times [2022-07-13 22:06:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:12,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743769682] [2022-07-13 22:06:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:12,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:12,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:12,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743769682] [2022-07-13 22:06:12,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743769682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:12,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:12,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:12,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884748415] [2022-07-13 22:06:12,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:12,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:12,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:12,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:12,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:12,931 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:12,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 274 transitions, 2132 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:12,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:12,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:17,875 INFO L129 PetriNetUnfolder]: 1083/3715 cut-off events. [2022-07-13 22:06:17,875 INFO L130 PetriNetUnfolder]: For 32855/32857 co-relation queries the response was YES. [2022-07-13 22:06:17,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16015 conditions, 3715 events. 1083/3715 cut-off events. For 32855/32857 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 29851 event pairs, 237 based on Foata normal form. 1/3647 useless extension candidates. Maximal degree in co-relation 15889. Up to 864 conditions per place. [2022-07-13 22:06:17,920 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 413 selfloop transitions, 26 changer transitions 112/638 dead transitions. [2022-07-13 22:06:17,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 638 transitions, 6920 flow [2022-07-13 22:06:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-13 22:06:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-07-13 22:06:17,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7020 transitions. [2022-07-13 22:06:17,925 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6433284457478006 [2022-07-13 22:06:17,926 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7020 transitions. [2022-07-13 22:06:17,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7020 transitions. [2022-07-13 22:06:17,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:17,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7020 transitions. [2022-07-13 22:06:17,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.2258064516129) internal successors, (7020), 62 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,939 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,940 INFO L186 Difference]: Start difference. First operand has 357 places, 274 transitions, 2132 flow. Second operand 62 states and 7020 transitions. [2022-07-13 22:06:17,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 638 transitions, 6920 flow [2022-07-13 22:06:18,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 638 transitions, 6210 flow, removed 354 selfloop flow, removed 15 redundant places. [2022-07-13 22:06:18,047 INFO L242 Difference]: Finished difference. Result has 445 places, 283 transitions, 2144 flow [2022-07-13 22:06:18,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2144, PETRI_PLACES=445, PETRI_TRANSITIONS=283} [2022-07-13 22:06:18,048 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 286 predicate places. [2022-07-13 22:06:18,048 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 283 transitions, 2144 flow [2022-07-13 22:06:18,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,049 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:18,049 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:18,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-13 22:06:18,049 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:18,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:18,050 INFO L85 PathProgramCache]: Analyzing trace with hash -38731419, now seen corresponding path program 8 times [2022-07-13 22:06:18,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:18,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265677677] [2022-07-13 22:06:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:18,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:18,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:18,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265677677] [2022-07-13 22:06:18,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265677677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:18,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:18,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:18,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151202076] [2022-07-13 22:06:18,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:18,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:18,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:18,480 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:18,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 283 transitions, 2144 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:18,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:18,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:21,479 INFO L129 PetriNetUnfolder]: 1126/3824 cut-off events. [2022-07-13 22:06:21,479 INFO L130 PetriNetUnfolder]: For 69336/69342 co-relation queries the response was YES. [2022-07-13 22:06:21,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20096 conditions, 3824 events. 1126/3824 cut-off events. For 69336/69342 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 30868 event pairs, 226 based on Foata normal form. 1/3703 useless extension candidates. Maximal degree in co-relation 19927. Up to 834 conditions per place. [2022-07-13 22:06:21,532 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 402 selfloop transitions, 51 changer transitions 43/583 dead transitions. [2022-07-13 22:06:21,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 583 transitions, 7814 flow [2022-07-13 22:06:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:06:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:06:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4037 transitions. [2022-07-13 22:06:21,546 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6553571428571429 [2022-07-13 22:06:21,546 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4037 transitions. [2022-07-13 22:06:21,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4037 transitions. [2022-07-13 22:06:21,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:21,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4037 transitions. [2022-07-13 22:06:21,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.34285714285714) internal successors, (4037), 35 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,552 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,552 INFO L186 Difference]: Start difference. First operand has 445 places, 283 transitions, 2144 flow. Second operand 35 states and 4037 transitions. [2022-07-13 22:06:21,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 583 transitions, 7814 flow [2022-07-13 22:06:21,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 583 transitions, 7097 flow, removed 327 selfloop flow, removed 30 redundant places. [2022-07-13 22:06:21,745 INFO L242 Difference]: Finished difference. Result has 425 places, 305 transitions, 2756 flow [2022-07-13 22:06:21,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2756, PETRI_PLACES=425, PETRI_TRANSITIONS=305} [2022-07-13 22:06:21,746 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 266 predicate places. [2022-07-13 22:06:21,746 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 305 transitions, 2756 flow [2022-07-13 22:06:21,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,747 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:21,747 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:21,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-13 22:06:21,747 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:21,748 INFO L85 PathProgramCache]: Analyzing trace with hash 307693301, now seen corresponding path program 9 times [2022-07-13 22:06:21,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:21,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617935123] [2022-07-13 22:06:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:21,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:22,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:22,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617935123] [2022-07-13 22:06:22,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617935123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:22,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:22,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:22,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707052516] [2022-07-13 22:06:22,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:22,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:22,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:22,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:22,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:22,262 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:22,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 305 transitions, 2756 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:22,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:22,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:27,177 INFO L129 PetriNetUnfolder]: 1340/4426 cut-off events. [2022-07-13 22:06:27,177 INFO L130 PetriNetUnfolder]: For 86189/86196 co-relation queries the response was YES. [2022-07-13 22:06:27,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24583 conditions, 4426 events. 1340/4426 cut-off events. For 86189/86196 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 37216 event pairs, 486 based on Foata normal form. 3/4337 useless extension candidates. Maximal degree in co-relation 24416. Up to 1269 conditions per place. [2022-07-13 22:06:27,238 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 436 selfloop transitions, 26 changer transitions 112/661 dead transitions. [2022-07-13 22:06:27,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 661 transitions, 9118 flow [2022-07-13 22:06:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-13 22:06:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-07-13 22:06:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7022 transitions. [2022-07-13 22:06:27,242 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6435117302052786 [2022-07-13 22:06:27,242 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7022 transitions. [2022-07-13 22:06:27,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7022 transitions. [2022-07-13 22:06:27,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:27,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7022 transitions. [2022-07-13 22:06:27,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.25806451612904) internal successors, (7022), 62 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,252 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,253 INFO L186 Difference]: Start difference. First operand has 425 places, 305 transitions, 2756 flow. Second operand 62 states and 7022 transitions. [2022-07-13 22:06:27,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 661 transitions, 9118 flow [2022-07-13 22:06:27,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 661 transitions, 8360 flow, removed 264 selfloop flow, removed 20 redundant places. [2022-07-13 22:06:27,510 INFO L242 Difference]: Finished difference. Result has 509 places, 315 transitions, 2808 flow [2022-07-13 22:06:27,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2808, PETRI_PLACES=509, PETRI_TRANSITIONS=315} [2022-07-13 22:06:27,511 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 350 predicate places. [2022-07-13 22:06:27,511 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 315 transitions, 2808 flow [2022-07-13 22:06:27,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,512 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:27,512 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:27,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-13 22:06:27,512 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:27,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:27,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1216122745, now seen corresponding path program 10 times [2022-07-13 22:06:27,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:27,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044572011] [2022-07-13 22:06:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:27,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:27,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:27,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044572011] [2022-07-13 22:06:27,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044572011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:27,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:27,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:27,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958902542] [2022-07-13 22:06:27,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:27,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:27,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:27,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:27,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:27,984 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:27,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 315 transitions, 2808 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:27,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:27,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:31,385 INFO L129 PetriNetUnfolder]: 1449/5027 cut-off events. [2022-07-13 22:06:31,386 INFO L130 PetriNetUnfolder]: For 152233/152256 co-relation queries the response was YES. [2022-07-13 22:06:31,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29934 conditions, 5027 events. 1449/5027 cut-off events. For 152233/152256 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 43916 event pairs, 303 based on Foata normal form. 3/4853 useless extension candidates. Maximal degree in co-relation 29722. Up to 1241 conditions per place. [2022-07-13 22:06:31,462 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 423 selfloop transitions, 54 changer transitions 52/616 dead transitions. [2022-07-13 22:06:31,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 616 transitions, 9814 flow [2022-07-13 22:06:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:06:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:06:31,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4011 transitions. [2022-07-13 22:06:31,466 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6511363636363636 [2022-07-13 22:06:31,466 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4011 transitions. [2022-07-13 22:06:31,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4011 transitions. [2022-07-13 22:06:31,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:31,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4011 transitions. [2022-07-13 22:06:31,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.6) internal successors, (4011), 35 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,472 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,473 INFO L186 Difference]: Start difference. First operand has 509 places, 315 transitions, 2808 flow. Second operand 35 states and 4011 transitions. [2022-07-13 22:06:31,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 616 transitions, 9814 flow [2022-07-13 22:06:31,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 616 transitions, 8434 flow, removed 662 selfloop flow, removed 51 redundant places. [2022-07-13 22:06:31,854 INFO L242 Difference]: Finished difference. Result has 471 places, 341 transitions, 3310 flow [2022-07-13 22:06:31,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3310, PETRI_PLACES=471, PETRI_TRANSITIONS=341} [2022-07-13 22:06:31,854 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 312 predicate places. [2022-07-13 22:06:31,854 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 341 transitions, 3310 flow [2022-07-13 22:06:31,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:31,855 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:31,855 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:31,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-13 22:06:31,855 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash -505615517, now seen corresponding path program 11 times [2022-07-13 22:06:31,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:31,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414548971] [2022-07-13 22:06:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:31,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:32,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:32,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:32,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414548971] [2022-07-13 22:06:32,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414548971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:32,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:32,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:32,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578660089] [2022-07-13 22:06:32,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:32,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:32,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:32,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:32,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:32,276 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:32,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 341 transitions, 3310 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:32,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:32,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:32,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:35,715 INFO L129 PetriNetUnfolder]: 1463/4857 cut-off events. [2022-07-13 22:06:35,715 INFO L130 PetriNetUnfolder]: For 102935/102946 co-relation queries the response was YES. [2022-07-13 22:06:35,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27672 conditions, 4857 events. 1463/4857 cut-off events. For 102935/102946 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 41690 event pairs, 431 based on Foata normal form. 5/4780 useless extension candidates. Maximal degree in co-relation 27481. Up to 1500 conditions per place. [2022-07-13 22:06:35,799 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 435 selfloop transitions, 47 changer transitions 36/605 dead transitions. [2022-07-13 22:06:35,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 605 transitions, 8032 flow [2022-07-13 22:06:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:06:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:06:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4036 transitions. [2022-07-13 22:06:35,803 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6551948051948052 [2022-07-13 22:06:35,803 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4036 transitions. [2022-07-13 22:06:35,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4036 transitions. [2022-07-13 22:06:35,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:35,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4036 transitions. [2022-07-13 22:06:35,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.31428571428572) internal successors, (4036), 35 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:35,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:35,811 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:35,811 INFO L186 Difference]: Start difference. First operand has 471 places, 341 transitions, 3310 flow. Second operand 35 states and 4036 transitions. [2022-07-13 22:06:35,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 605 transitions, 8032 flow [2022-07-13 22:06:36,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 605 transitions, 7389 flow, removed 251 selfloop flow, removed 19 redundant places. [2022-07-13 22:06:36,212 INFO L242 Difference]: Finished difference. Result has 494 places, 361 transitions, 3627 flow [2022-07-13 22:06:36,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3627, PETRI_PLACES=494, PETRI_TRANSITIONS=361} [2022-07-13 22:06:36,213 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 335 predicate places. [2022-07-13 22:06:36,213 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 361 transitions, 3627 flow [2022-07-13 22:06:36,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:36,214 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:36,214 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:36,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-13 22:06:36,214 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:36,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:36,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1590040421, now seen corresponding path program 12 times [2022-07-13 22:06:36,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:36,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513238675] [2022-07-13 22:06:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:36,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:36,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:36,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513238675] [2022-07-13 22:06:36,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513238675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:36,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:36,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:36,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270682646] [2022-07-13 22:06:36,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:36,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:36,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:36,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:36,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:36,660 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:36,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 361 transitions, 3627 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:36,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:36,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:36,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:40,443 INFO L129 PetriNetUnfolder]: 1625/5573 cut-off events. [2022-07-13 22:06:40,443 INFO L130 PetriNetUnfolder]: For 119134/119157 co-relation queries the response was YES. [2022-07-13 22:06:40,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31140 conditions, 5573 events. 1625/5573 cut-off events. For 119134/119157 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 49543 event pairs, 414 based on Foata normal form. 3/5385 useless extension candidates. Maximal degree in co-relation 30940. Up to 1617 conditions per place. [2022-07-13 22:06:40,560 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 463 selfloop transitions, 51 changer transitions 52/653 dead transitions. [2022-07-13 22:06:40,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 653 transitions, 9676 flow [2022-07-13 22:06:40,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:06:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:06:40,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4027 transitions. [2022-07-13 22:06:40,563 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6537337662337662 [2022-07-13 22:06:40,563 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4027 transitions. [2022-07-13 22:06:40,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4027 transitions. [2022-07-13 22:06:40,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:40,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4027 transitions. [2022-07-13 22:06:40,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.05714285714286) internal successors, (4027), 35 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:40,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:40,569 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:40,569 INFO L186 Difference]: Start difference. First operand has 494 places, 361 transitions, 3627 flow. Second operand 35 states and 4027 transitions. [2022-07-13 22:06:40,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 653 transitions, 9676 flow [2022-07-13 22:06:41,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 653 transitions, 9044 flow, removed 245 selfloop flow, removed 21 redundant places. [2022-07-13 22:06:41,068 INFO L242 Difference]: Finished difference. Result has 521 places, 388 transitions, 3912 flow [2022-07-13 22:06:41,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3912, PETRI_PLACES=521, PETRI_TRANSITIONS=388} [2022-07-13 22:06:41,069 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 362 predicate places. [2022-07-13 22:06:41,069 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 388 transitions, 3912 flow [2022-07-13 22:06:41,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:41,070 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:41,070 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:41,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-13 22:06:41,070 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:41,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:41,071 INFO L85 PathProgramCache]: Analyzing trace with hash 296849815, now seen corresponding path program 13 times [2022-07-13 22:06:41,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:41,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578094096] [2022-07-13 22:06:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:41,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:41,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:41,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578094096] [2022-07-13 22:06:41,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578094096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:41,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:41,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:41,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223814129] [2022-07-13 22:06:41,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:41,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:41,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:41,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:41,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:41,453 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:41,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 388 transitions, 3912 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:41,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:41,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:41,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:45,287 INFO L129 PetriNetUnfolder]: 1689/5606 cut-off events. [2022-07-13 22:06:45,287 INFO L130 PetriNetUnfolder]: For 140229/140241 co-relation queries the response was YES. [2022-07-13 22:06:45,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33815 conditions, 5606 events. 1689/5606 cut-off events. For 140229/140241 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 49723 event pairs, 495 based on Foata normal form. 3/5515 useless extension candidates. Maximal degree in co-relation 33599. Up to 1783 conditions per place. [2022-07-13 22:06:45,381 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 503 selfloop transitions, 51 changer transitions 36/677 dead transitions. [2022-07-13 22:06:45,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 677 transitions, 9519 flow [2022-07-13 22:06:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:06:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:06:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4048 transitions. [2022-07-13 22:06:45,384 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2022-07-13 22:06:45,384 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4048 transitions. [2022-07-13 22:06:45,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4048 transitions. [2022-07-13 22:06:45,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:45,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4048 transitions. [2022-07-13 22:06:45,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.65714285714286) internal successors, (4048), 35 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:45,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:45,391 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:45,391 INFO L186 Difference]: Start difference. First operand has 521 places, 388 transitions, 3912 flow. Second operand 35 states and 4048 transitions. [2022-07-13 22:06:45,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 677 transitions, 9519 flow [2022-07-13 22:06:45,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 677 transitions, 8844 flow, removed 291 selfloop flow, removed 19 redundant places. [2022-07-13 22:06:45,982 INFO L242 Difference]: Finished difference. Result has 545 places, 410 transitions, 4309 flow [2022-07-13 22:06:45,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4309, PETRI_PLACES=545, PETRI_TRANSITIONS=410} [2022-07-13 22:06:45,983 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 386 predicate places. [2022-07-13 22:06:45,983 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 410 transitions, 4309 flow [2022-07-13 22:06:45,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:45,983 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:45,983 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:45,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-13 22:06:45,984 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:45,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:45,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1909176201, now seen corresponding path program 14 times [2022-07-13 22:06:45,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:45,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418025709] [2022-07-13 22:06:45,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:45,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:46,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:46,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418025709] [2022-07-13 22:06:46,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418025709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:46,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:46,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:46,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336482178] [2022-07-13 22:06:46,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:46,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:46,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:46,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:46,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:46,381 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:46,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 410 transitions, 4309 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:46,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:46,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:46,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:50,469 INFO L129 PetriNetUnfolder]: 1809/5984 cut-off events. [2022-07-13 22:06:50,469 INFO L130 PetriNetUnfolder]: For 164457/164477 co-relation queries the response was YES. [2022-07-13 22:06:50,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37477 conditions, 5984 events. 1809/5984 cut-off events. For 164457/164477 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 54046 event pairs, 579 based on Foata normal form. 3/5796 useless extension candidates. Maximal degree in co-relation 37252. Up to 1460 conditions per place. [2022-07-13 22:06:50,577 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 544 selfloop transitions, 61 changer transitions 47/739 dead transitions. [2022-07-13 22:06:50,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 739 transitions, 11826 flow [2022-07-13 22:06:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:06:50,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:06:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4039 transitions. [2022-07-13 22:06:50,580 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6556818181818181 [2022-07-13 22:06:50,580 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4039 transitions. [2022-07-13 22:06:50,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4039 transitions. [2022-07-13 22:06:50,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:50,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4039 transitions. [2022-07-13 22:06:50,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.4) internal successors, (4039), 35 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:50,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:50,586 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:50,586 INFO L186 Difference]: Start difference. First operand has 545 places, 410 transitions, 4309 flow. Second operand 35 states and 4039 transitions. [2022-07-13 22:06:50,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 739 transitions, 11826 flow [2022-07-13 22:06:51,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 739 transitions, 11178 flow, removed 265 selfloop flow, removed 20 redundant places. [2022-07-13 22:06:51,262 INFO L242 Difference]: Finished difference. Result has 570 places, 434 transitions, 4770 flow [2022-07-13 22:06:51,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3800, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4770, PETRI_PLACES=570, PETRI_TRANSITIONS=434} [2022-07-13 22:06:51,263 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 411 predicate places. [2022-07-13 22:06:51,263 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 434 transitions, 4770 flow [2022-07-13 22:06:51,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:51,264 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:51,264 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:51,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-13 22:06:51,264 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:51,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash -375152665, now seen corresponding path program 15 times [2022-07-13 22:06:51,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:51,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534698339] [2022-07-13 22:06:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:51,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:51,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:51,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534698339] [2022-07-13 22:06:51,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534698339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:51,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:51,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115068803] [2022-07-13 22:06:51,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:51,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:51,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:51,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:51,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:51,868 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:51,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 434 transitions, 4770 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:51,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:51,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:51,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:56,058 INFO L129 PetriNetUnfolder]: 1915/6243 cut-off events. [2022-07-13 22:06:56,058 INFO L130 PetriNetUnfolder]: For 197925/197940 co-relation queries the response was YES. [2022-07-13 22:06:56,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41423 conditions, 6243 events. 1915/6243 cut-off events. For 197925/197940 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 56825 event pairs, 571 based on Foata normal form. 5/6134 useless extension candidates. Maximal degree in co-relation 41185. Up to 2012 conditions per place. [2022-07-13 22:06:56,175 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 552 selfloop transitions, 54 changer transitions 36/729 dead transitions. [2022-07-13 22:06:56,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 729 transitions, 11109 flow [2022-07-13 22:06:56,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:06:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:06:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4050 transitions. [2022-07-13 22:06:56,220 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6574675324675324 [2022-07-13 22:06:56,220 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4050 transitions. [2022-07-13 22:06:56,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4050 transitions. [2022-07-13 22:06:56,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:56,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4050 transitions. [2022-07-13 22:06:56,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.71428571428571) internal successors, (4050), 35 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:56,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:56,227 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:56,227 INFO L186 Difference]: Start difference. First operand has 570 places, 434 transitions, 4770 flow. Second operand 35 states and 4050 transitions. [2022-07-13 22:06:56,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 729 transitions, 11109 flow [2022-07-13 22:06:57,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 729 transitions, 10303 flow, removed 337 selfloop flow, removed 20 redundant places. [2022-07-13 22:06:57,125 INFO L242 Difference]: Finished difference. Result has 595 places, 458 transitions, 5186 flow [2022-07-13 22:06:57,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4167, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5186, PETRI_PLACES=595, PETRI_TRANSITIONS=458} [2022-07-13 22:06:57,126 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 436 predicate places. [2022-07-13 22:06:57,126 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 458 transitions, 5186 flow [2022-07-13 22:06:57,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:57,127 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:57,127 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:57,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-13 22:06:57,127 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:57,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:57,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1705616637, now seen corresponding path program 16 times [2022-07-13 22:06:57,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:57,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341032026] [2022-07-13 22:06:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:57,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:57,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:57,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341032026] [2022-07-13 22:06:57,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341032026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:57,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:57,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:06:57,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713976950] [2022-07-13 22:06:57,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:57,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:06:57,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:57,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:06:57,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:06:57,544 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:06:57,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 458 transitions, 5186 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:57,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:57,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:06:57,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:02,052 INFO L129 PetriNetUnfolder]: 2128/7084 cut-off events. [2022-07-13 22:07:02,052 INFO L130 PetriNetUnfolder]: For 222670/222703 co-relation queries the response was YES. [2022-07-13 22:07:02,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46069 conditions, 7084 events. 2128/7084 cut-off events. For 222670/222703 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 66700 event pairs, 684 based on Foata normal form. 3/6846 useless extension candidates. Maximal degree in co-relation 45819. Up to 2645 conditions per place. [2022-07-13 22:07:02,201 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 562 selfloop transitions, 52 changer transitions 52/753 dead transitions. [2022-07-13 22:07:02,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 753 transitions, 12037 flow [2022-07-13 22:07:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:07:02,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:07:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4043 transitions. [2022-07-13 22:07:02,205 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6563311688311688 [2022-07-13 22:07:02,252 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4043 transitions. [2022-07-13 22:07:02,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4043 transitions. [2022-07-13 22:07:02,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:02,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4043 transitions. [2022-07-13 22:07:02,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.51428571428572) internal successors, (4043), 35 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:02,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:02,258 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:02,258 INFO L186 Difference]: Start difference. First operand has 595 places, 458 transitions, 5186 flow. Second operand 35 states and 4043 transitions. [2022-07-13 22:07:02,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 753 transitions, 12037 flow [2022-07-13 22:07:03,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 753 transitions, 11363 flow, removed 284 selfloop flow, removed 20 redundant places. [2022-07-13 22:07:03,307 INFO L242 Difference]: Finished difference. Result has 624 places, 486 transitions, 5518 flow [2022-07-13 22:07:03,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4623, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5518, PETRI_PLACES=624, PETRI_TRANSITIONS=486} [2022-07-13 22:07:03,308 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 465 predicate places. [2022-07-13 22:07:03,308 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 486 transitions, 5518 flow [2022-07-13 22:07:03,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:03,308 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:03,309 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:03,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-13 22:07:03,309 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:03,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1903491923, now seen corresponding path program 17 times [2022-07-13 22:07:03,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:03,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171940971] [2022-07-13 22:07:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:03,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:03,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:03,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171940971] [2022-07-13 22:07:03,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171940971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:03,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:03,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:07:03,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175867298] [2022-07-13 22:07:03,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:03,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:07:03,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:03,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:07:03,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:07:03,702 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:07:03,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 486 transitions, 5518 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:03,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:03,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:07:03,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:08,538 INFO L129 PetriNetUnfolder]: 2247/7397 cut-off events. [2022-07-13 22:07:08,539 INFO L130 PetriNetUnfolder]: For 260585/260605 co-relation queries the response was YES. [2022-07-13 22:07:08,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50767 conditions, 7397 events. 2247/7397 cut-off events. For 260585/260605 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 70514 event pairs, 699 based on Foata normal form. 5/7267 useless extension candidates. Maximal degree in co-relation 50501. Up to 2373 conditions per place. [2022-07-13 22:07:08,699 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 628 selfloop transitions, 57 changer transitions 36/808 dead transitions. [2022-07-13 22:07:08,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 808 transitions, 12562 flow [2022-07-13 22:07:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:07:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:07:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4065 transitions. [2022-07-13 22:07:08,702 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6599025974025974 [2022-07-13 22:07:08,702 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4065 transitions. [2022-07-13 22:07:08,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4065 transitions. [2022-07-13 22:07:08,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:08,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4065 transitions. [2022-07-13 22:07:08,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.14285714285714) internal successors, (4065), 35 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,709 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,709 INFO L186 Difference]: Start difference. First operand has 624 places, 486 transitions, 5518 flow. Second operand 35 states and 4065 transitions. [2022-07-13 22:07:08,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 808 transitions, 12562 flow [2022-07-13 22:07:10,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 808 transitions, 11798 flow, removed 351 selfloop flow, removed 18 redundant places. [2022-07-13 22:07:10,120 INFO L242 Difference]: Finished difference. Result has 653 places, 511 transitions, 6055 flow [2022-07-13 22:07:10,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6055, PETRI_PLACES=653, PETRI_TRANSITIONS=511} [2022-07-13 22:07:10,121 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 494 predicate places. [2022-07-13 22:07:10,121 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 511 transitions, 6055 flow [2022-07-13 22:07:10,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:10,122 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:10,122 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:10,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-13 22:07:10,122 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:10,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1163892451, now seen corresponding path program 18 times [2022-07-13 22:07:10,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:10,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918062133] [2022-07-13 22:07:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:10,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:10,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:10,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918062133] [2022-07-13 22:07:10,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918062133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:10,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:10,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:07:10,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712271004] [2022-07-13 22:07:10,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:10,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:07:10,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:10,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:07:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:07:10,566 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:07:10,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 511 transitions, 6055 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:10,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:10,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:07:10,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:15,876 INFO L129 PetriNetUnfolder]: 2382/7881 cut-off events. [2022-07-13 22:07:15,876 INFO L130 PetriNetUnfolder]: For 303640/303672 co-relation queries the response was YES. [2022-07-13 22:07:16,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55877 conditions, 7881 events. 2382/7881 cut-off events. For 303640/303672 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 76270 event pairs, 891 based on Foata normal form. 5/7612 useless extension candidates. Maximal degree in co-relation 55598. Up to 1903 conditions per place. [2022-07-13 22:07:16,064 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 654 selfloop transitions, 60 changer transitions 47/848 dead transitions. [2022-07-13 22:07:16,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 848 transitions, 14770 flow [2022-07-13 22:07:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:07:16,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:07:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4053 transitions. [2022-07-13 22:07:16,068 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6579545454545455 [2022-07-13 22:07:16,068 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4053 transitions. [2022-07-13 22:07:16,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4053 transitions. [2022-07-13 22:07:16,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:16,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4053 transitions. [2022-07-13 22:07:16,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.8) internal successors, (4053), 35 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:16,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:16,075 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:16,075 INFO L186 Difference]: Start difference. First operand has 653 places, 511 transitions, 6055 flow. Second operand 35 states and 4053 transitions. [2022-07-13 22:07:16,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 848 transitions, 14770 flow [2022-07-13 22:07:17,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 848 transitions, 14000 flow, removed 342 selfloop flow, removed 20 redundant places. [2022-07-13 22:07:17,534 INFO L242 Difference]: Finished difference. Result has 680 places, 536 transitions, 6568 flow [2022-07-13 22:07:17,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5440, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6568, PETRI_PLACES=680, PETRI_TRANSITIONS=536} [2022-07-13 22:07:17,535 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 521 predicate places. [2022-07-13 22:07:17,535 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 536 transitions, 6568 flow [2022-07-13 22:07:17,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:17,535 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:17,535 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:17,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-13 22:07:17,536 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:17,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:17,536 INFO L85 PathProgramCache]: Analyzing trace with hash -115917063, now seen corresponding path program 19 times [2022-07-13 22:07:17,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:17,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357292128] [2022-07-13 22:07:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:17,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:17,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:17,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357292128] [2022-07-13 22:07:17,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357292128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:17,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:17,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:07:17,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694777410] [2022-07-13 22:07:17,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:17,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:07:17,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:17,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:07:17,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:07:17,937 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:07:17,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 536 transitions, 6568 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:17,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:17,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:07:17,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:23,159 INFO L129 PetriNetUnfolder]: 2394/7884 cut-off events. [2022-07-13 22:07:23,159 INFO L130 PetriNetUnfolder]: For 334008/334034 co-relation queries the response was YES. [2022-07-13 22:07:23,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57840 conditions, 7884 events. 2394/7884 cut-off events. For 334008/334034 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 76331 event pairs, 790 based on Foata normal form. 5/7723 useless extension candidates. Maximal degree in co-relation 57548. Up to 2654 conditions per place. [2022-07-13 22:07:23,337 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 658 selfloop transitions, 62 changer transitions 44/851 dead transitions. [2022-07-13 22:07:23,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 851 transitions, 14134 flow [2022-07-13 22:07:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:07:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:07:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4033 transitions. [2022-07-13 22:07:23,340 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6547077922077922 [2022-07-13 22:07:23,340 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4033 transitions. [2022-07-13 22:07:23,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4033 transitions. [2022-07-13 22:07:23,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:23,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4033 transitions. [2022-07-13 22:07:23,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.22857142857143) internal successors, (4033), 35 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:23,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:23,346 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:23,346 INFO L186 Difference]: Start difference. First operand has 680 places, 536 transitions, 6568 flow. Second operand 35 states and 4033 transitions. [2022-07-13 22:07:23,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 851 transitions, 14134 flow [2022-07-13 22:07:25,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 851 transitions, 13177 flow, removed 434 selfloop flow, removed 20 redundant places. [2022-07-13 22:07:25,221 INFO L242 Difference]: Finished difference. Result has 706 places, 559 transitions, 6901 flow [2022-07-13 22:07:25,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5835, PETRI_DIFFERENCE_MINUEND_PLACES=645, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6901, PETRI_PLACES=706, PETRI_TRANSITIONS=559} [2022-07-13 22:07:25,223 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 547 predicate places. [2022-07-13 22:07:25,223 INFO L495 AbstractCegarLoop]: Abstraction has has 706 places, 559 transitions, 6901 flow [2022-07-13 22:07:25,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:25,223 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:25,223 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:25,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-13 22:07:25,224 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:25,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash 920759187, now seen corresponding path program 20 times [2022-07-13 22:07:25,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:25,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236077043] [2022-07-13 22:07:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:25,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:25,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:25,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236077043] [2022-07-13 22:07:25,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236077043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:25,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:25,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:07:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304483462] [2022-07-13 22:07:25,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:25,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:07:25,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:07:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:07:25,661 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:07:25,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 559 transitions, 6901 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:25,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:25,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:07:25,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:32,684 INFO L129 PetriNetUnfolder]: 2729/9006 cut-off events. [2022-07-13 22:07:32,684 INFO L130 PetriNetUnfolder]: For 423134/423184 co-relation queries the response was YES. [2022-07-13 22:07:32,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69537 conditions, 9006 events. 2729/9006 cut-off events. For 423134/423184 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 89268 event pairs, 1048 based on Foata normal form. 5/8726 useless extension candidates. Maximal degree in co-relation 69233. Up to 2071 conditions per place. [2022-07-13 22:07:32,905 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 735 selfloop transitions, 47 changer transitions 77/946 dead transitions. [2022-07-13 22:07:32,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 946 transitions, 17553 flow [2022-07-13 22:07:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-13 22:07:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-13 22:07:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6054 transitions. [2022-07-13 22:07:32,909 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6490137221269296 [2022-07-13 22:07:32,909 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6054 transitions. [2022-07-13 22:07:32,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6054 transitions. [2022-07-13 22:07:32,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:32,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6054 transitions. [2022-07-13 22:07:32,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 114.22641509433963) internal successors, (6054), 53 states have internal predecessors, (6054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:32,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:32,918 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:32,918 INFO L186 Difference]: Start difference. First operand has 706 places, 559 transitions, 6901 flow. Second operand 53 states and 6054 transitions. [2022-07-13 22:07:32,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 946 transitions, 17553 flow [2022-07-13 22:07:35,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 946 transitions, 16643 flow, removed 416 selfloop flow, removed 18 redundant places. [2022-07-13 22:07:35,151 INFO L242 Difference]: Finished difference. Result has 773 places, 571 transitions, 6882 flow [2022-07-13 22:07:35,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=6212, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6882, PETRI_PLACES=773, PETRI_TRANSITIONS=571} [2022-07-13 22:07:35,152 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 614 predicate places. [2022-07-13 22:07:35,152 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 571 transitions, 6882 flow [2022-07-13 22:07:35,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:35,153 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:35,153 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:35,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-13 22:07:35,153 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:35,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2096326171, now seen corresponding path program 21 times [2022-07-13 22:07:35,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:35,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277323557] [2022-07-13 22:07:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:35,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:35,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:35,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277323557] [2022-07-13 22:07:35,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277323557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:35,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:35,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:07:35,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619210208] [2022-07-13 22:07:35,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:35,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:07:35,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:35,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:07:35,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:07:35,564 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-13 22:07:35,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 571 transitions, 6882 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:35,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:35,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-13 22:07:35,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand